Charles F. Beckingham (Beckingham, Charles F.)

• 
  The Hebrew Letters of Prester John
  by Prester John, Edward Ullendorff, Charles F. Beckingham
  Hardcover, School of Oriental & African Studies, ISBN 0197136044 (0-19-713604-4)
• 
  Prester John: The Mongols and the Ten Lost Tribes
  by Bernard Hamilton, C.F. Beckingham
  Hardcover, Variorum, ISBN 086078553X (0-86078-553-X)