Scrapbooks chiefly concern Letsche's service as an American Expeditionary Force officer in World War I; included are letters to his family from training camps in Georgia and Tennessee and from France; postcards, pictures, maps, military orders, commissions, citations, and other items pertaining to his active duty; newspaper clippings and personal items from the postwar period; and a copy of the history of the 326th Regiment.

Color maps of the environs of Paris, Amiens, Châlons, Mézières, and Issoudun in France, and the area west of Bailleul, Belgium, primarily showing roads, railroads, and rivers. All but the map of the Bailleul region are in French. The Bailleul map is in English, with the title Hostile battery positions, August 1st, 1918.