Smithsonian Institution Archives

Finding Aids to Personal Papers and
Special Collections in the Smithsonian Institution Archives

Record Unit 7281
William F. Foshag Collection,
1923-1965 and undated

By William Cox and William Massa, Jr.


Introduction

Historical Note

Descriptive Entry

Series Descriptions

  Series 1. GENERAL CORRESPONDENCE, 1923, 1942-1965. ARRANGED ALPHABETICALLY.

  Series 2. PHOTOGRAPHS OF MEXICAN FIELD TRIPS, 1926-1927, 1929, 1931, 1934.

  Series 3. FIELD NOTES ON PARICUTIN VOLCANO, 1943-1952.

  Series 4. PHOTOGRAPHS, SLIDES, AND GLASS PLATE NEGATIVES OF PARICUTIN VOLCANO, 1943-1955 AND UNDATED.

  Series 5. MANUSCRIPTS, REPORTS, REPRINTS AND PUBLICATIONS ON PARICUTIN VOLCANO, 1943-1954 AND UNDATED.

  Series 6. RESEARCH NOTES ON PARICUTIN VOLCANO, 1946-1950 AND UNDATED.

  Series 7. MAPS OF MEXICO.



INTRODUCTION

This finding aid was digitized with funds generously provided by the Smithsonian Institution Women's Committee.


HISTORICAL NOTE

William F. Foshag (1894-1956) joined the United States National Museum's Division of Mineralogy and Petrology as an assistant curator in 1919. From 1929 to 1941, he served as curator of the Division of Physical and Chemical Geology (Systematic and Applied) and from 1929 to 1948 was also curator of the Division of Mineralogy and Petrology. From 1948 to 1956, Foshag was head curator of the Department of Geology and acting curator of the Division of Mineralogy and Petrology.

Foshag's research was primarily devoted to the study of the geology and mineralogy of Mexico. Between 1926 and 1941, Foshag made several collecting trips to Mexico under the auspices of the Smithsonian's Roebling Fund. While serving as a representative of the United States Geological Survey in its cooperative work with the Mexican government, Foshag was able to study the eruption of the Paricutin Volcano in 1943. He made subsequent visits to Paricutin in 1944 and 1945 to observe the volcano. In 1946, he went to Japan for the United States government to supervise the grading, classifying, and appraising of diamonds captured from the Japanese during World War II. In 1949, Foshag was commissioned by the Guatemalan government to survey ancient jade objects from Central America.

William F. Foshag working in the lab, looking through a microscope.
William F. Foshag working in the lab,
looking through a microscope


DESCRIPTIVE ENTRY

This collection consists mostly of materials documenting Foshag's research on Paricutin Volcano. Included are field notes recorded by Foshag, as well as notes and observations made by Jenaro Gonzalez and Celedonia Gutierrez; photographs, color slides, and glass plate negatives documenting the birth and subsequent activity of the volcano; research notes mostly concerning the analysis of lava and other materials erupted from Paricutin; manuscripts, reports, reprints, and publications concerning Paricutin and volcanology; and maps of Mexico, particularly the Paricutin region. Also included in the collection is general correspondence of Foshag, 1923, 1942-1956, including letters concerning his study of Paricutin Volcano, his survey of Central American jade objects, and photographs taken on several of Foshag's mineral collecting trips to Mexico, 1926-1934.

Foshag transferred a collection of 151 photographic prints and corresponding negatives from his study of Paricutin Volcano to the National Archives in 1951 (NARS Accession Inventory No. 451-111).


SERIES DESCRIPTIONS

SERIES 1.
GENERAL CORRESPONDENCE, 1923, 1942-1965. ARRANGED ALPHABETICALLY.

This series consists of incoming and outgoing correspondence of William F. Foshag, primarily during the years he served as head curator of the Department of Geology, USNM. The correspondence concerns the identification and analysis of gems and minerals; Foshag's study of the Paricutin Volcano; his survey of Guatemalan jade objects; scientific societies and conferences; and the preparation of manuscripts for publication. Correspondence post-dating Foshag's death in 1956 is mostly letters of sympathy written to the Department of Geology, USNM.

Box 1 of 16
Folder1   Allen, Robert D., 1954-1955
Folder2   American Chemical Society, 1950-1951
Folder3   American Gem and Pearl Company, 1949, 1954
Folder4   American Gem Society, 1949-1954
Folder5   American Geological Institute, 1949, 1956
Folder6   American Geophysical Union, 1949, 1955-1956
Folder7   American Mineralogist, 1949, 1953-1956
Folder8   American Museum of Natural History, 1948-1949, 1953-1954
Folder9   American Potash and Chemical Corporation, 1949
Folder10   American University, 1949-1950, 1953
Folder11   Andreatta, Prof. Ciro, 1951-1954
Folder12   Arellano, Alberto, 1949-1953
Folder13   Australian Museum, 1949-1952
Folder14   Austria Geologisches Bundesanstalt, 1951
Folder15   "A" misc., 1949-1956
Folder16   Bandy, Mark C., 1949-1956
Folder17   Barber, Raymond J., 1951-1955
Folder18   Barron, Elbert M., 1950-1956
Folder19   Barry, John, 1952-1955
Folder20   Berger, Anton, 1951-1956
Folder21   Berlin, Heinrich, 1952-1954
Folder22   Bideaux, Richard A., 1952-1955
Folder23   Bliss, Robert Woods, 1948-1956
Folder24   Borhegyi, Stephan F., 1950-1955
Folder25   British Museum (Natural History), 1949-1953
Folder26   Brown, J. J., 1949-1950
Folder27   Brush Development Laboratories Co., 1948, 1953
Folder28   Burr, C. Fred, 1950-1954
Folder29   "B" misc., 1951-1956
Folder30   Caplan, Allan, 1948-1951
Folder31   Claringbull, G. F., 1950-1955
Folder32   Colburn, Burnham S., 1955
Folder33   Coleman, Charles, 1951-1952
Folder34   Common Ground (1951) Ltd., 1954-1955
Folder35   Corry, Andrew V., 1950-1952
Folder36   Cosmos Club, 1952-1955
Folder37   Cousen, Thomas W., 1953-1955
Folder38   Cranbrook Institute, 1949, 1954-1955
Folder39   Cushman Collection, 1949-1950
Folder40   "C" misc., 1951-1956

Box 2 of 16
Folder1   D'Ascenzo, Nicola G., 1949-1955
Folder2   de Terra, Helmut, 1950-1954
Folder3   de Vuhena, E., 1952
Folder4   Dickinson College, 1949-1950
Folder5   Duhovnik, Joze M., 1951-1954
Folder6   DuPont, James M., 1954-1956
Folder7   "D" misc., 1949-1956
Folder8   Easby, Dudley T., Jr., 1955-1956
Folder9   Eastern Federation of Mineralogical and Lapidary Societies, 1953-1955
Folder10   Eldot, Herman, 1949-1954
Folder11   Emory University, 1950-1956
Folder12   Encyclopedia Britannica, 1954-1955
Folder13   "E" misc., 1949-1956
Folder14   Fischer, Walther, 1949-1956
Folder15   Fisher, Otto O., 1948-1956
Folder16   Flagg, Arthur, 1950-1956
Folder17   Flores, Teodoro, 1949-1955
Folder18   Ford, Hugh A., 1948-1955
Folder19   Fries, Carl, Jr., 1948-1952
Folder20   Fryxell, Fritiof M., 1954-1956
Folder21   Fuller, Richard E., 1950
Folder22   "F" misc., 1949-1956
Folder23   Gemological Institute of America, 1948-1954
Folder24   Gems and Minerals Magazine, 1953
Folder25   General Electric Company, 1954-1956
Folder26   Geological Society of America, 1948-1955
Folder27   Geophysical Laboratory, 1949-1950
Folder28   Geophysical Magazine (London), 1953-1954
Folder29   Gonzalez, Enrique M., 1955
Folder30   Gonzalez, Jenaro, 1949-1956
Folder31   Graton, Louis C., 1948-1956
Folder32   Guatemala Research, 1948-1954
Folder33   Guild, William, 1952-1956
Folder34   Gutierrez, Celedonio, 1948-1955
Folder35   Gutierrez, Celedonio (manuscript), undated
Folder36   "G" misc., 1951-1956
Folder37   Hansen, Oskar J. W. , 1949-1955
Folder38   Hardinge, C. E., 1953-1957
Folder39   Healy, James, 1950-1953
Folder40   Hermann, Felix, 1949-1952
Folder41   Hix's Strange as It Seems, 1949
Folder42   Hoffman, Robert D., 1952-1953
Folder43   Holmes, Ralph J., 1951-1955
Folder44   "H" misc., 1949-1956

Box 3 of 16
Folder1   Ingram, W. Frank, 1950-1955
Folder2   International Commission on Meteorites, 1948-1953
Folder3   International Geological Congress XX, 1955-1956
Folder4   Inter-Ocean Trade Company, 1951-1955
Folder5   "I" misc., 1950-1956
Folder6   Jensen, David E., 1950-1955
Folder7   Johnston, William D., Jr., 1950-1953
Folder8   Jones, Grover C., 1954-1956
Folder9   Jones, Waldo H., 1953-1954
Folder10   Jones, Warren, 1953-1955
Folder11   Joseph, Mildred E., 1954-1956
Folder12   "J" misc., 1950-1956
Folder13   Kalousek, George L., 1952-1955
Folder14   Kennedy, George C., 1954-1956
Folder15   Kidder, Alfred Vincent, 1950-1955
Folder16   King, Lansford, 1950-1954
Folder17   Kobayashi, Teiichi, 1951-1955
Folder18   Kouvo, Olavi, 1953-1955
Folder19   Kraft, James L., 1951-1952
Folder20   Kraus, Edward H., 1950-1955
Folder21   Kulp, J. Laurence, 1955
Folder22   Kume, Takeo, 1948-1951
Folder23   Kuno, Hisashi, 1948-1955
Folder24   "K" misc., 1949-1956
Folder25   Lane, Boodle, 1950-1953
Folder26   Lapham, Davis M., 1953-1956
Folder27   Laughlin, Alexander William, 1953
Folder28   Leslie, Robert E., 1954-1955
Folder29   "L" misc., 1949-1956
Folder30   "Mc" misc., 1953-1956
Folder31   Maas, Alberto E., 1952-1955
Folder32   Macdonald, Gordon A., 1951-1956
Folder33   Matsumoto, Tatsuro, 1955
Folder34   Mayboeck, Franz, 1949-1953
Folder35   Mayers, Dan E., 1948-1951
Folder36   Meen, Victor B., 1950-1955
Folder37   Meteoritical Society, 1953, 1957
Folder38   Mexico Institute Nacional Recursos Minerales, 1951-1953
Folder39   Mexico University Centennial IV, 1951
Folder40   Meyerhoff, Howard Augustus, 1950-1951
Folder41   Michel, Herman, 1951-1952
Folder42   Mineralogical Society of America, 1948-1956
Folder43   Minikami, Takeshi, 1949-1956
Folder44   "M" misc., 1948-1958

Box 4 of 16
Folder1   National Geographic Magazine, 1950-1956
Folder2   National Research Council, 1949-1950
Folder3   Natural History Magazine, 1953
Folder4   Nelson, Elmer R., Jr., 1951-1955
Folder5   "N" misc., 1950-1956
Folder6   O'Daniel, H., 1954-1955
Folder7   "O" misc., 1950-1956
Folder8   Pabst, Adolf, 1951-1952
Folder9   Pacific Science Congress VII, 1948-1949
Folder10   Paricutin Volcano, 1943-1965
Folder11   Paricutin Volcano - Film and Photos, 1949-1956
Folder12   Perry, Stuart H., 1951-1953
Folder13   Pfannenstiel, Max, 1954-1955
Folder14   Phelps Dodge Corporation, 1953
Folder15   Pitts, William B., 1948-1956
Folder16   Pough, Frederick H., 1948-1955
Folder17   Powers, Howard A., 1949-1951
Folder18   "P" misc., 1950-1956
Folder19   "Q" misc., 1955
Folder20   Rapp, Floyd A., 1948-1954
Folder21   Redington, C. Richard, 1952-1956
Folder22   Renfro Collection, 1949
Folder23   Royal Ontario Museum of Geology, 1948-1950
Folder24   "R" misc., 1949-1956
Folder25   Sahama, Th. G., 1949
Folder26   Sakurai, Kin-ich, 1948-1956
Folder27   Santillan, Manuel, 1953-1956
Folder28   Schmitter, Eduardo, 1949-1953
Folder29   Schweizerbart'sche Verlagsbuchhandlung, 1952-1954
Folder30   Science Clubs of America, 1955
Folder31   Seifert, H., 1953-1954
Folder32   Shipley, Robert, 1949-1952
Folder33   Sinkankas, John, 1949-1956
Folder34   Skinner, George D., 1949-1953
Folder35   Solle, G., 1953
Folder36   Soper, Ellis Clarke, 1953-1955
Folder37   Spence, Hugh S., 1949-1952
Folder38   Staats, Fred, 1950-1952
Folder39   Stevens, J. A., 1949-1950
Folder40   Sudo, Toshio, 1949-1951
Folder41   Sutti, Martin, 1952-1953
Folder42   "S" misc., 1952-1956

Box 5 of 16
Folder1   Taylor, James A., 1951-1953
Folder2   Termer, Franz, 1950-1956
Folder3   "T" misc., 1951-1956
Folder4   United States Geological Survey, 1949-1956
Folder5   United States Geological Survey - Collections, 1952-1954
Folder6   "U" misc., 1950-1956
Folder7   Verlag Gustao Feller-Nottuln, 1953
Folder8   Vienna Naturhistorisches Museum, 1952-1953
Folder9   Vonsen, Magnus, 1949-1954
Folder10   "V" misc., 1949-1956
Folder11   Ward's Natural Science Establishment, 1948-1954
Folder12   Washington Academy of Sciences Journal, 1923, 1950-1955
Folder13   Watambe, Takeo, 1949-1955
Folder14   Wells, Francis G., 1949-1951
Folder15   Wheeler, Harry Edgar, 1952-1956
Folder16   Wilcox, Ray E., 1949-1956
Folder17   Wild, Georg O., 1949-1956
Folder18   "W" misc., 1942, 1949-1956
Folder19   Yagi, Kenzo, 1953-1954
Folder20   Zak, Lubor, 1955-1956
Folder21   "X-Y-Z" misc., 1952-1956

SERIES 2.
PHOTOGRAPHS OF MEXICAN FIELD TRIPS, 1926-1927, 1929, 1931, 1934.

This series consists of an album of photographs documenting several of William F. Foshag's trips to Mexico to collect mineral specimens for the USNM. Included are photographs of Mexican cities and villages; Mexican people; mining sites; the field parties, including several of Foshag; and specimens collected. Most of the photographs are described, but undated.

Box 5 of 16
Folder22   Photographs of Mexican field trips, 1926-1927, 1929, 1931, 1934

SERIES 3.
FIELD NOTES ON PARICUTIN VOLCANO, 1943-1952.

This series consists primarily of field notes concerning the eruption of Paricutin Volcano recorded by William F. Foshag. Also included are field notes on the volcano maintained by Jenaro Gonzalez and Celedonia Gutierrez. The latter notes are written in Spanish.

Box 6 of 16
Folder1   Foshag, William F. Field notes, May 21-August 1943. Typed copy.
Folder2   Foshag, William F. Field notes, March 21-July 8, 1944.
Folder3   Foshag, William F. Field notes, November 28, 1943-December 8, 1944. Includes pencil drawings of Paricutin by Foshag.
Folder4   Foshag, William F. Field notes, January 16-October 27, 1945.
Folder5   Gonzalez, Jenaro. Field notes, July 1943-August 1945. Typed copy, in Spanish.
Folder6   Gutierrez, Celedonio. "Field notes and observations on the activity of Paricutin Volcano," 1943, 1945-1949, 1951-1952.

SERIES 4.
PHOTOGRAPHS, SLIDES, AND GLASS PLATE NEGATIVES OF PARICUTIN VOLCANO, 1943-1955 AND UNDATED.

This series provides extensive photographic documentation of the birth and subsequent activity of the Mexican volcano, Paricutin. Included are photographs taken by Foshag during his field work at Paricutin, as well as photographs taken by others and collected by Foshag. Most of the photographs are described and dated. Included are photographs of the volcano in eruption; pictures documenting the effect of Paricutin on local villages and people; aerial photographs of the volcano; and photographs of scientists, including Foshag, conducting field research at Paricutin.

Box 7 of 16
Folders1-8   Foshag, William F. Photographs of Paricutin Volcano, no. F2-F171, 1943-1944.

Box 8 of 16
Folders1-6   Foshag, William F. Photographs of Paricutin Volcano, no. F172-F319, 1944-1945.
Folder7   Andresen, Gerardo. Photographs of Paricutin Volcano, undated.
Folder8   Brehme, Arno. Photographs of Paricutin Volcano, April 1943.
Folder9   Castro, Honorato Gonzalez. Photographs of Paricutin Volcano, 1944.
Folder10   Fisher, Otto O. Consists mostly of aerial photographs of Paricutin Volcano, December 1944. Also includes a photograph of William F. Foshag in the field at Paricutin, November 27, 1944.
Folder11   Fries, Carl, Jr. Photographs of Paricutin Volcano, 1943-1945.
Folder12   Garcia, Rafael. Photographs of Paricutin Volcano, 1943-1944.

Box 9 of 16
Folder1   Gonzalez, Jenaro. Photographs of Paricutin Volcano, 1944.
Folder2   Graton, Louis C. Photographs of Paricutin Volcano, April 19, 22, 1943.
Folder3   Gregory, Audrey F., Photographs of Paricutin Volcano, 1944.
Folder4   Gutierrez, Caledonio. Photographs of Paricutin Volcano, 1947, 1949.
Folder5   Gutierrez, Luis. Photographs of Paricutin Volcano, undated.
Folder6   Lawrence, Donald B. Photographs of Paricutin Volcano, December 1943.
Folder7   Navarro. Photographs of Paricutin Volcano, 1943-1944.
Folder8   Navy, United States. Aerial photographs of Paricutin Volcano, undated.
Folders9-10   Ordonez, Ezequiel. Photograph album and miscellaneous photographs of Paricutin Volcano, 1943-1945.
Folder11   Perez Pena, Adan. Photographs of Paricutin Volcano, 1943, 1945.
Folder12   Pfeiffer, Arnold. Photographs of Paricutin Volcano, 1943.
Folder13   Richard, Horace G. Photographs of Paricutin Volcano, April 1944.
Folder14   Ruesga, Edmundo. Photographs of Paricutin Volcano, 1943.
Folder15   Ruiz, Chavez. Photographs of Paricutin Volcano, 1943.

Box 10 of 16
Folder1   St. Alban, Mary. Photographs of Paricutin Volcano, 1943-1944.
Folder2   Trask, Parker. Photographs of Paricutin Volcano, February 28, 1943.
Folder3   Termer, Franz. Photographs of Paricutin Volcano, November 1949.
Folder4   Waitz, Paul. Photographs of Paricutin Volcano, 1943-1945.
Folder5   Zeirer, Frank. Photographs of Paricutin Volcano, 1943-1944.
Folders6-7   Aerial photographs of Paricutin Volcano, no. 1-132. Taken at approximately 15,000 feet.
Folders8-10   Miscellaneous photographs of Paricutin Volcano, 1943.

Box 11 of 16
Folders1-6   Miscellaneous photographs of Paricutin Volcano, 1944-1945 and undated.
Folder7   Miscellaneous photographs of Mexico, undated.

Box 12 of 16

SERIES 5.
MANUSCRIPTS, REPORTS, REPRINTS AND PUBLICATIONS ON PARICUTIN VOLCANO, 1943-1954 AND UNDATED.

This series consists of manuscripts, reports, reprints, and publications on Paricutin Volcano. Much of the material is written in Spanish.

Box 13 of 16
Folder1   Barnes, Virgil E. and Romberg, Frederick. "Observations of Relative Gravity at Paricutin Volcano."' Reprint from Bulletin of the Geological Society of America, vol. 59, pp. 1019-1026, 1948.
Folder2   Berbeyer, Rafael Molina. "Angunas Observaciones Geoquimicas y Fisico-Quimicas en el Volcan Paricutin," 1946. Typed manuscript in Spanish.
Folder3   Covarrubias, Luis Flores. "Interpretaciones. Geneticas del Volcan Paricutin a la Luz de la Sismelogia." Folleto No. 7, Sociedad Geologica Mexicana, 1945. The report is written in Spanish.
Folder4   Foshag, William F. and Henderson, Edward P. "Primary Sublimates at Paricutin Volcano." Reprint from Transactions of the American Geophysical Union, vol. 27, no. 5, 1946.
Folder5   Foshag, William F., Handwritten draft of his review of "Volumes and weights of pyroclastic material, lava, and water erupted by Paricutin Volcano, Michocacan, Mexico," by Carl Fries, Jr., 1953.
Folder6   Fries, Carl, Jr., and Gutierrez, Celedonio. "Activity of Paricutin Volcano from July 1 to December 31, 1949." Reprint from Transactions of the American Geophysical Union, vol. 31, pp. 732-740, 1950.
Folder7   Fries, Carl, Jr. and Gutierrez, Celedonio. "Activity of Paricutin Volcano from January 1 to June 30, 1950."' Reprint from Transactions of the American Geophysical Union, vol. 32, pp. 227-230, 1951.
Folder8   Gutierrez, Celedonio. "Notas de Lo Que Fue en San Juan Antes del Volcan." Typed report in Spanish.
Folder9   Hatt, Robert T. "Bibliography of Paricutin Volcano." Reprint from Papers of the Michigan Academy of Science, Art's and Letters, Vol. XXXIV, 1948.
Folder10   Lawrence, Donald B. "Paricutin: The World's Newest Mountain." Reprint from Mazama, vol. 26, pp. 15-34, 1944.
Folder11   Milton, Charles. "Notes on Volcanic Rocks from Paricutin, Mexico." Reprint from Transactions of the American Geophysical Union, 1944.
Folder12   Ordonez, Ezequiel. "The New Volcano Paricutin." Reprint from International Intellectual Interchange, 1943.
Folder13   Ordonez, Ezequiel. "El Volcan De Paricutin." Irrigacion en Mexico, July-August 1943. Written in Spanish.
Folder14   Ordonez, Ezequiel. "El Volcan de Paricutin," 1944.
Folder15   Perez Pena, Adan. "Periodo de Actividad del volcan Paricutin; Mich. del 9 al 18 de Junio de 1943." Typed report in Spanish.
Folder16   Segerstrom, Kenneth. Monthly report on Paricutin Volcano, July 1946.
Folder17   Termer, Franz. "Der Paricutin Vulkan in Michoacan, Mexico," 1952. Written in German.
Folder18   Trask, Parker D. "The Mexican Volcano Paricutin," undated. Typed report.
Folder19   White, Donald E. "Paricutin's Cyclic Activity." Typed manuscript and reprint from Transactions of the American Geophysical Union, 1944.
Folder20   Wilcox, Ray. E. "Activity of Paricutin, December 1945." Typed report.
Folder21   Wilcox, Ray E. "Activity of Paricutin Volcano from September 18 to November 30, 1946." Reprint from Transactions of the American Geophysical Union, 1947.
Folder22   Wilcox, Ray E. Reports on Activity of Paricutin Volcano, September 1946-June 1947. Also includes notes by Foshag on Wilcox's reports.
Folder23   Wilcox, Ray E. "Activity of Paricutin Volcano from December 1, 1946 to March 31, 1947." Reprint from Transactions of the American Geophysical Union, 1947.
Folder24   Wilcox, Ray E. and Oropeza, Samuel Shoup. "Activity of Paricutin Volcano from April 1 to November 30, 1947." Reprint from Transactions of the American Geophysical Union, 1948.
Folder25   Wilcox, Ray E. and Gutierrez, Celedonio. "Activity of Paricutin Volcano from April 1 to July 31, 1948." Reprint from Transactions of the American Geophysical Union, 1948.
Folder26   Wilcox, Ray E. "Petrology of Paricutin Volcano, Mexico." United States Geological Survey Bulletin 965-C, 1954.
Folder27   Williams, Howel. "Volcanoes of the Paricutin Region, Mexico." United States Geological Survey Bulletin 965-B, 1950.
Folder28   "Geologia de Tierra Caliente y Parte de la Costa de Michoacan," author unknown and undated. Written in Spanish.
Folder29   Miscellaneous articles concerning Paricutin Volcano, 1943-1952 and undated.
Folder30   Miscellaneous publications concerning volcanoes.

SERIES 6.
RESEARCH NOTES ON PARICUTIN VOLCANO, 1946-1950 AND UNDATED.

This series consists of research notes taken by William F. Foshag during his study of Paricutin Volcano. Most of the notes concern the analysis of lava and other materials erupted from the volcano. Also included are notes made by Foshag during his survey of Central American jade objects (box 14, folder 1).

Box 14 of 16
Folder1   Notebook containing notes, recorded by Foshag, mostly concerning the analysis of Paricutin lava samples. Also includes notes on Central American jade objects.
Folder2   Notebook containing notes, recorded by Foshag, concerning mud and salt samples from Paricutin.
Folder3   Ammonia and sal-ammoniac.
Folder4   Ascensive force.
Folder5   Ash-lava ratio
Folder6   Ash solubility
Folder7   Bombs
Folder8   Crater
Folder9   Eruptions
Folder10   Flashing arcs
Folder11   Fumaroles
Folder12   Gases
Folder13   Gases, burning
Folder14   Geology of Michoacan, Mexico.
Folder15   Hornitos
Folder16   Inclusions
Folder17   Laccoliths
Folder18   Lavas
Folder19   Lava, flows
Folder20   Lightning
Folder21   Rainfall
Folder22   Rock alteration
Folder23   Secondary sublimates
Folder24   Sublimates. Includes letter from Charles Milton to Foshag (May 22, 1947) regarding the analysis of rocks from Paricutin.
Folder25   United States Geological Survey. Analysis of lava and other materials recovered from Paricutin and submitted by Foshag, 1946-1950.
Folder26   Vapor clouds
Folder27   Volcanoes, general
Folder28   Water
Folder29   Miscellaneous research notes on Paricutin Volcano.

SERIES 7.
MAPS OF MEXICO.

This series consists of maps collected by William F. Foshag on his many field trips to Mexico. Particularly represented are maps of the Paricutin region, Michoacan, Mexico.

Box 15 of 16
Folders1-4   Maps of Mexico

Box 16 of 16

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