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From transcribe
O.A.S.
Army Post Office A 30 Ju 18
Mrs. W. S. Drewry 727 Linden Ave Victoria B.C. Canada
Passed by Censor Nº. 5496
JH Drewry
BC Archives, 93-6553 Box 4 / DREWRY FAMILY / Selected Correspondence, 1917–1919.