The New Leica manual : a manual for the amateur and the professional convering the field of Leica camera photography /

by Morgan, Willard Detering n. 1900
Published 1953

Graphic graflex photography : the master book for the larger camera /

by Morgan, Willard Detering n. 1900, Morgan, Willard Detering n. 1900, Lester, Henry M.
Published 1954