The photostat in reference work
By: by Charles F. McCombs ...
Publisher: Public Library
Published: 1920
Place of publication: New York
Language: eng
Subjects: Photostat; Reference services (Libraries)
Notes: Plates printed on both sides.

"Reprinted, November 1920 from the Bulletin of the New York Public library of October, 1920."

"References on the photostat": p. 7.