Publications comprise: Hints on the use of the Leica Camera (October 1929, no. 2390a), three editions of Directions for using the Leitz Leica Camera (January 1930, no. 2237d; April 1931, no. 2237e; April 1931, no. 2237e), Hints on developing, printing, enlarging (May 1932, no. 7182, Why Leica (November 1932, no. 7259), Directions Leica Camera Model II (January 1993, no. 7280), Directions Leica Camera (July 1935, no. 7280a), Leica Summar 1935 (June 1935, no. 7449a), The Interchangeable Leica Lenses (February 1936, no. 7615), Leica Directions Part I (June 1937, no. 7704), Leica Directions Part II (June 1937, no. 7705), Leica Directions Part III (June 1937, no. 7706), two copies of Leica Accessories (July 1935, no. 7402a; May 1937, no. 7402b), Developing and Printing appliances for Leica films (September 1937, no. 7378b), Filters for Leica Cameras (November 1938, no. 7613a), The Pioneer and Leader Leica (n.d. [c. 1936], no.7702), four editions of Leica The Camera of Modern Times (April 1937, no. 7343c; August 1938, no. 7343; October 1935, no. 7343b; December 1934, no. 7343a), Handle the Leica (August 1938, no. 7784), two editions of Enlarging Equipment (February 1936, no. 7040b; December 1937, no. 7040c), Small Projectors (July 1933, no. 7331), Leica Small Projectors (September 1935), Leitz Parvo (May 1939, no. 7838), Enlarging Equipment (July 1933, no. 7040a), Remote shutter release (September 1936, no. 7587a), Directions for the MIKAS (1956, no. 54-6/Engl.), three editions of Tables for use with the Leica Camera (March 1929, no. 2323a; October 1932, no. 2323d; August 1931, no. 7106), two editions of Lens Tables for use with the Leica Camera (November 1937, no. 7427b; May 1934, no. 7427), Leitz Micro Camera attachments (October 1935, no. 7590), Leica Multiplicity of uses (1938, London 7), Large Printer for Leica Lantern slides (February 1936, no. 7323a), Leica the Pioneer and Leader (prewar, no reference), First Principles for Leica Users (November 1935, no. 7611), Developing and Printing Appliances for Leica films (April 1936, no. 2378a), How to use your Leicameter (Leitz Inc., New York, 1938, F.1625-5C-7/38) and Leica Camera and accessory apparatus [catalogue] (November 1931, 1K engl).