There are 3 pages of info on the D.W. Karn Co. in the book, "Downright Upright" (A History of the Canadian Piano Industry). Pages 68-71. Several other illustrations in the book as well, of their ad cards and decals. They did have a branch in Hamburg, Germany which might explain why one turned up there in an antique store. The book was published in 1991 by Hatural Heritage. Phone number listed is 416 694 7907. Clair
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