GERMAN TEXT ONLY; Published by Lindemanns, Stuggart, 1993. Digital reproductions:
"Die Photographischen Apparate - Leipzig 1904" by Hans Spoerl, 106 b&w illustrations and drawings, 6 x 9", 130 pages. Includes information about the cameras and accessories of the 1904 period.
"Spiegelreflexkamera - Halle a.S 1910 by Anton Mayer. 80 pages with 48 illustrations.
Limited reprint of 500 copies and each set is numbered. Books are in very good condition with mild shelf-life wear on slipcase in cardboard slipcase