cover CANADIAN FORCES MAIL: 1919 (26 May) O.A.S. envelope to Markham, Ontario showing a fine strike of the "ARMY POST OFFICE/P.B.2" struck at Archangel showing arrival c.d.s. (30.6.19), countersigned and with censorship h.s. also an envelope to Decature, Illinois, without postal markings but with "Examined by Base Censor" seal and two censorship handstamps. Photo