United States. Marine Corps. Marine Regiment, 9th

found: Edward Gill Collection (AFC/2001/001/25806), Veterans History Project, American Folklife Center, Library of Congress, 2005:(War or Conflict: World War, 1939-1945; Branch of Service: Marine Corps; Unit of Service: A Company, 1st Battalion, 9th Marine Regiment, 3rd Marine Division; Location of Service: Bougainville Island (Solomon Islands), Guam (Mariana Islands); Iwo Jima; Pacific Theater) - http://lcweb2.loc.gov/diglib/vhp/bib/25806

found: NUCMC data from Library of the Marine Corps for Cecil O. Williams papers, 1930-1945(Cecil Ogburn Williams; U.S. Marine; served before and during World War II; collection contains an undated handwritten roster of the 4th Platoon, Company K, 4th Battalion, 9th Marines)

found: Strobridge, Truman R. A brief history of the 9th Marines, 1967:p. 1 (9th Regiment was organized in 1917; "created as one of the two infantry regiments of the Advanced Base Force")