https://canadianstampnews.com/hspl-seeking-post-office-department-supplements-bulletins/
HSPL seeking Post Office Department supplements, bulletins - Canadian Stamp News
Dec 7, 2019 - By Jesse Robitaille Supplements and bulletins issued beginning in the early 20th century by Canada’s Post Office Department – and later by its successor,...
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https://auction.archivesinternational.com/Post-Office-Department-Army-Treasury-1853-1863-Pair-of-Checks_i26829119
Post Office Department & Army Treasury, 1853-1863, Pair of Checks - Archives International Auctions
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https://digicoll.lib.berkeley.edu/record/129111
Robert H. Morse, fifty years of service in Post Office Department, Federal Building.
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https://www.bahamaspress.com/davis-government-delivers-promotion-exercises-in-post-office-department-met-department-port-department-and-road-traffic-department/
Davis Government delivers promotion exercises in Post Office Department, Met Department, Port...
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