Harold Hanne Elarth (b. 1885) was a U. S. Army officer who served in the Philippine Constabulary and rose to the rank of Lt. Col. The collection contains research for Elarth's book on the Philippine Constabulary, Philippine Constabulary Officers Association history, a diary, letterpress copybooks, a Philippine Constabulary manual, photographs, and correspondence.
Albert Montreville Taylor served in the Phillipine Constabulary. The collection (1900-1966) contains correspondence, diaries, constabulary records and publications, and also personal papers, photographs, and memorabilia.