This collection contains materials relating to Thomas B. Keith's time as a Captain during World War II, serving in the European Theatre between 1942-1946. Materials include handwritten letters to his wife, Helen, and other friends and family members, correspondence with different US military officials, pocket books, guides, and manuals that he may have read as a member of the Army, and handwritten journals and diaries detailing his experiences.

While serving in Europe, Keith collected several materials, including artifacts, related to the war. These artifacts include items like utensils, metal uniform pins, and a leather wallet. Other artifacts include a Nazi SS helmet, a Nazi uniform breastplate, and other Nazi memorabilia.