[2] David A. Hanson is a photographer and art professor teaching at Fairleigh Dickinson University in New Jersey.
He has been interested in the history of photography for many years, specifically about the technical side of it,[3] and has written books and articles about it, such as The Beginnings of Photographic Reproduction in the USA.
He also helped curate an exhibit called Photographs in Ink at Fairleigh Dickinson University's art gallery.
The collection is multinational containing the work of Americans (Edward Bierstadt, John Carbutt), French (Nicephore Niepce) and Germans (Frederick Wilhelm von Egloffstein).
It has 1093 objects, including 599 books, 43 journals, and 444 of various types of photographs such as collotypes, halftones, photolithographs, and woodburytypes.