A practical manual of the collodion process
Subtitle: giving in detail a method for producing positive and negative pictures on glass and paper.  Ambrotypes.  Printing process ...
By: By S. D. Humphrey.
Edition: 3d ed., rev. and greatly enl.
Publisher: Humphrey's journal print
Published: 1857
Place of publication: New York
Language: eng
Number of pages: 215
Subjects: Photography.; Ambrotype.
Notes: Publisher's advertisement: 4 p. (at front)