Standard Printing & Song Backs
The E-1 & E-2 varieties of this cover shows a soldier receiving a laurel from . The imprint on the bottom of the design shows an 1900 date. The E-1 variety has Song Back 15 on the reverse, while E-2 shows blank back.
The E-1 variety shows Song Back 15, “When Johnny Canuck Comes Home”.
The E-2 variety shows a blank back.
Canadian and Overseas Uses

Above, J.C. Wilson’s The Maple Leaf For Ever Type II Patriotic Envelope E-3 Patriam Amamus Postmarked St. Roche, Quebec to Sydney, Cape Breton, NS, September 9, 1900. Below, a second example with a strip of four ½¢ QV Numeral stamps mailed to St. Roche de Quebec from Nova Scotia.

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Well Done! (A Page In History) Patriotic Envelope with pen cancellation on Map stamp. Gates' envelope designation E-1

Below, back of envelope with song back 15
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Below, a variation noted as E-2. Postally used from Strachan Avenue, Toronto on Feb 4, 1901 to Milford, via Picton,
with Picton and Milford receiving marks on the reverse dated Feb 5) with a 2¢ QV Numeral, with the right stamp and margin trimmed
Above, a variation noted as E-2. Postally used from Hamilton, Ontario on Jan 13, 1903 to Scotland, via New York, with a Glasgow receiving mark on the reverse dated Jan 21 with an imprint block of the QV Numeral ½¢ from plate 1.
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Business Uses
This J.C. WIlson Well Done! cover has been postally used from Morant Bay, Jamaica to Hamburg, Germany, a rare use. Addressed to Messrs. Hesse, Newman & Co., the cover bears two 1d Llandovery Falls Jamaican stamps, no. 31, issued in 1900, and a Half Penny Queen Victoria stamp, no. 16 from 1883 through 1890. The stamps are cancelled with a double ring Morant Bay cancellation dated April 1, 1901. The cover has a blank back, making it unknown to Henry Gates, named here as variety E-2, but with the flap imprinted “MARCHALLECK & CO, MORANT BAY, JAMAICA WI”.

Below, the reverse of the cover showing a Kingston, Jamaica back stamp dated April 2, 1901, and a receiver from Hamburg dated April 19, 1901.

According to the Commercial Directory of British, Dutch, Danish, and French Colonial Possessions in Central and South America and the West Indies, published March 1892, Marchalleck & Co. was a merchant in Morant Bay providing groceries & provisions, one of three merchants in the town—a rather obscure company to be using a J.C. Wilson cover for business use.
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Ed Richardson, on page 22 of his The Canadian Flag Cancellation Handbook, shows this cover illustrating a Montreal Type 8 Flag Cancel with indicia “C”, dated May 9, 1901. The cover is preprinted with the text “If not called for in 10 days, return to J.C. Wilson & Co., Montreal”. That cover, ex Banfield, ex. Richardson, is shown above.
Ed Richardson, in his The Canadian Flag Cancellation Handbook, shows a used copy of this cover illustrating a Montreal Type 8 Flag Cancel with indicia “C”, dated May 9, 1901. That cover was preprinted with the text “If not called for in 10 days, return to J.C. Wilson & Co., Montreal”.
The roughly opened cover below was used by S.H. Morrison & Co., Custom Tailors, Hatters, Clothiers and Furnishers, Middleton, N.S. (although the “& Co.” and the “s” on tailors has been crossed out, as if S.H. Middleton has downsized to a one-man operation). It is postmarked Nov 22, 1901, sent to Dr. L. R. Morse, Lawrencetown, NS. The cover has song back no. 15, making it variety E-1.