Photographs of what appear to be spectral lines
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PrintPhotographs possibly taken by Thomas W. Smillie. Image numbers 12613 and 12614 appear on the same cyanotype print.
Smithsonian Institution Archives, Record Unit 95, Box 78, Image No. 12613 and Image No. 12614
Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520
Undated
Photography
Photographs
SIA RU000095 [12613 and 12614]
Cyanotypes (photographic prints); 8.5h x 10w