1874-1898 Canada Dead Letter Office Canada specialized collection mounted on 42 exhibit pages, mostly Small Queens, few letter cards and three pieces, organized by DLO cancel type. Spotted DLOS-4 with "W" in year date on 1881 cover, DLO2f-1 type (DLO Branch Superintendent oval on 3¢ Small Queen cover) with "stamp previously used"; Earliest reported date of #1DLO1-15 on Dec 19, 1882 cover, #DLO01-6 and -9 on 1897 cover, A used copies of #OX1 officially sealed with partial strike of #DLO3c-1 (stamp small thin) and more. Inspect. Ex Plain. (Image)