Cyanotype, Riker Electric Mail Wagon vehicle for exhibition by Post Office Department at Pan-American Exposition, Buffalo, New York, 1901.

Cyanotype, Marine Hospital Service Laboratory exhibit - equipped with apparatus for investigating subjects pertaining to sanitary science - at World's Columbian Exposition, Chicago, 1893.

Cyanotype, aerial view of buildings and grounds at the World's Columbia Exposition, with Japanese Ho-o-Den Palace on Wooded Island, north end of the Horticulture Building, Woman's Building, Midway Plaisance, and Ferris Wheel in view, Chicago, 1893. 

Cyanotype, Camp F.L. Guenther, U.S. Coast Artillery at the Pan-American Exposition, Buffalo, New York, 1901.

Cyanotype, disassembled mannequins in Post Office Department exhibit at Cotton States Exposition, Atlanta, 1895.

Cyanotype, Department of Agriculture exhibit at the Pan-American Exposition, Buffalo, New York, 1901.

At the Pan-American Exposition in Buffalo, New York, visitors view a papier mache replica of a Triceratops skeleton made by Frederic Lucas, assistant curator in the Section of Vertebrate Fossils at the United States National Museum, 1901.

Buildings and grounds at Cotton States Exposition, Atlanta, Georgia, featuring "Mystic Maze" and ferris wheel, 1895.

Organ built by John Brown Organ Co. on exhibit at Cotton States Exposition, Atlanta, 1895.

Bear skin on exhibit at the Panama-Pacific International Exposition, San Francisco, California, 1915.