A.E.F. World War I Cover Collection - A.P.O.'s 902-952 and other related mails. Approximately 75 A.P.O. 900's covers and cards and 48 other AEF related covers mounted and many annotated on pages in Scott album; including APO 902 "CPO" Central Post Office covers including the scarcer postmarks in black, scarce APO 934 postmarks (not reported until 1978), the rare purple "Rennes" woodblock mark used by substation of APO 711 (later becoming APO 940), APO 944 straight line tying 1¢ on picture post card and other usages throughout including APO to APO, organization corner cards including YMCA, Knights of Columbus and Salvation Army, related mails include French town cancellation on AEF mails, stamped mails, censor stamps and indefinite postmarks; condition well above the norm throughout, a lovely collection well worth careful examination (no photo). Estimate  $500 - 750. $0