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Patrick Chalmers, Sir Rowland Hill, and James Chalmers, Inventor of the Adhesive Stamp (London, 1882), _passim_. See also the same writer's pamphlet, entitled
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The Position of Sir Rowland Hill made plain (1882), and his
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The Adhesive Stamp; a Fresh Chapter in the History of Post-Office Reform (1881). Compare Mr. Pearson Hill's tract,
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A Paper on Postage Stamps, in reply to Mr. Chalmers, reprinted from the
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Philatelic Record,