Letter from John G. (Jack) McClelland (M & S) to Alfred A. Knopf (Alfred A. Knopf, Inc), 20 November 1957, re The Double Hook
Letter from John G. (Jack) McClelland (M&S) to Professor F.M. [Fred] Salter (U of Alberta), 13 Dec 1957, re The Double Hook
Letter from John G. (Jack) McClelland (McClelland & Stewart) to Sheila Watson, 8 August 1958, re The Double Hook
Letter from John G. (Jack) McClelland (McClelland & Stewart) to Mrs. Wilfred [Sheila] Watson, 30 March 1959, re The Double Hook
Letter from Sheila Watson to J. G. (Jack) McClelland (McClelland & Stewart), 5 October 1964, re The Double Hook

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