History:
Museums:
Air Force Historical Research Agency
Works:
Seventy-Five
Years of Inflight Refueling
Highlights,
1923–1998
Smith,
Richard K.
Air
Force History and Museums Program, 1998
http://www.airforcehistory.hq.af.mil/Publications/fulltext/75yrs_inflight_refueling.pdf
Flight Refuelling Ltd.
http://www.aviation-museum.co.uk/fr.html
History and Reference Sites:
Luftwaffe im Focus, Luftfahrtverlag
Jodie's DC-10 Page - Accidents & Links
Federation of American Scientists
Chandelle, a Journal of Aviation History
Aviation Wings and Badges of World War 2
AF Enlisted Heritage Research Institute