Manual of Photographic Chemistry, by T. Frederick Hardwich 63710 [Full title: A Manual of Photographic Chemistry: Including the Practice of the Collodion Process] [Link: http://www.gutenberg.org/6/3/7/1/63710 ] [Files: ; 63710-0.txt; 63710-h.htm] Thanks to Tom Cosmas produced from files generously provided on The Internet Archive. All resultant materials are placed in the Public Domain. Regards, Al