JF Ptak Science Books Quick Post
These images, cyanotypes, come from the manuscript notebooks of Paul Bartsch, made while he was 23/24 years-of-age. At this point of his life Bartsch had just started his studies in zoology at the Univresity of Iowa--nine years later he would leave with a Ph.D. and start a 50+ year career with the Smithsonian Institution. The manuscript is 400 pages long, and illustrated with 77 of these small photographs. These are some examples of the work. (The manuscript is available for sale at our blog bookstore).