Forage Cap Chin-Strap
the drawings by Robert H. Sickler of various contract original
forage caps in private collections.
States Army Headgear 1855-1902” - Catalog of United States Army
Uniforms in the Collections of the Smithsonian Institution, II, by
Edgar M. Howell, December 1975, p. 15
to US Forage Cap Chin-strap