Correspondence 1892-1972
Family postcards 1892-1931
Family correspondence between Kostenko's sister Lidia Alekseeva (Lydia Alexeiff) and Barry (Boris) Kostenko 1907-1972
Family documents 1920s
Death certificate 1928 August 21
Genealogical document 1929 September 10
Research notes by Barry Kostenko undated
Marriage records 1925
Identification, membership, and business cards post 1915
Immigration records 1914-1927
Commendations of Kostenko's service in World War I from US Army 1921
Translation of military service record, immigration declaration, and Certificate of Naturalization 1920-1927
Personal notes, bonds, and account book 1914-1924
Prayer book undated
South American travel documentation for American Geographical Society 1924
Military Career File 1904-1919
Military career record undated
Service reports, appointments, orders, and travel papers 1904-1919
Artillery sketches and tables undated
Maps and plans 1907-1915
Kostenko in aviation school 1906-1914
Russo-Japanese War 1904-1905
Photo album 1904-1918