Correspondence, manuscripts, documents, and printed materials relating to the history of the Leĭb Gvardiĭ Pervyĭ Strelkovoĭ Polk (First Rifle Regiment of the Imperial Guard) and its emigre veterans' group, Obe̋dinenie Ofit︠s︡erov Pervogo Strelkovogo Polka (Union of Officers of the First Rifle Regiment of the Imperial Guard). Correspondence includes letters from members of the Union, and letters to the union on the occasion of the Regiment's 75th and 100th jubilees (1931, 1956). Among the manuscripts are autobiographies and memoirs of members of the Union, touching on such topics as the history of the Regiment and its service in World War I. There are a few items from the period of World I and the Civil War, but almost the entire collection dates from the 1920s to the 1950s.