References and Bibliographies
The single most comprehensive source for the US Army from weapons, uniforms and equipment from 1775 to 2000 is free on the internet. The Survey of US Army Uniforms, Weapons & Accouterments , by David Cole, approximately 100 pages.
It is downloadable in color as a pdf file at this address –
For more information, the AASLH Military History Affinity Committee, led by Gordon Blaker, has developed an essential bibliography document that is organized by time period as well as artifact type: