Thank you very much, I thought that there is any standard covers templates. Unfortunately, neither this magazine "M.С. & H" nor a copy of the article Mr. Coates I was not able to buy or find (I tried to look for). Mike O'Donnell book I recently bought in a US internet bookstore, hoping to get it in the near future. Probably, it would be useful.
Prompt please, in what year there was such a model, with the strap sewn to the rear side of the cover?
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