220th Aviation Company Catkillers Tet 1968, Last Man Standing
220th Aviation Company Catkillers Quarterly Newsletter, Catkillers, Unit Roster, Photos, KIA, MIA, Bird Dog, unit personnel, unit members, 3rd Marine Div, 108th Arty, 5th Infantry Division, 101st Airborne Div
220th Aviation Company Catkillers History, 1969
Harold Vail's Instagram, Twitter & Facebook on IDCrawl
220th Aviation Company Catkillers 4th Quarterly Newsletter 2011
Catkillers Home Page
Harold Vail's Instagram, Twitter & Facebook on IDCrawl
220th Aviation Company Catkillers Tet 1968, Last Man Standing
220th Aviation Company Catkillers Historical Overview, 1969
220th Aviation Company Catkillers Tet 1968, Last Man Standing
220th Aviation Company Catkillers Yearly E–Newsletter, 2018
220th Aviation Company Catkillers Tet 1968, Last Man Standing
220th Aviation Company Catkillers Tet 1968, Last Man Standing
Harold Vail's Instagram, Twitter & Facebook on IDCrawl
220th Aviation Company Catkillers Yearly Newsletter, 2016