cover First Day Covers, 1920's-30's, accumulation of many hundreds, all addressed, 1920's mostly uncacheted, better incl. no. 721 line pair, 645 with Cleveland f.d.c. cancel, QE1a-QE3a, 1930's are mostly cacheted, better incl. no. C18 (New York f.d.c., Rice cachet), 704-715 (two sets), also incl. some events, few foreign, etc., generally fine-very fine lot