03/16/1918 Hanford, Charles Barnum to Meadowcroft, William Henry
(Hayes, William Alphonsus; Altengarten, Henry Augustus; Edison, Thomas Alva; Meadowcroft, Phoebe Canfield (Mrs William H.) [supplied or conjectured]) Submarines and submarine warfare; Military
[X128C58]  Charles Hummel Collection, Wayne, N.J.: Edison Wartime Research Reports -- General
[X128C58L; TAEM 0:0]
Courtesy of Charles Hummel.