Upjever Airfield - Luftwaffe in Friesland: Research Documentation 1936-1986 Written in German by Sybille Schneider 362 pages, 216 pages on pre-RAF period; 34 pages on RAF period; and 113 pages on post-RAF period. Sadly out of print.   Gunter Kipp, Maurice Parker and Mick Ryan have copies. This was superseded and updated by Jurgen Zapf's book "Fliegerhorst Upjever Luftswaffenstandort in Friesland 1936-2004"