Earlier posts have highlighted nine of the 44 Western titles published by Wm. Collins and Sons Canada Co. in their 1940/50s paperback imprint White Circle Pocket Library. Here are four more, each from an author with only one book published by Collins.
Will Ermine is a pseudonym for Harry Sinclair Drago (1888-1979). Cowboy, Say Your Prayers was first published in 1939 (New York: William Morrow).
Howard Fast's (1914-2003) The Last Frontier dates from 1941 (New York: Duell, Sloane & Pearce).
The Devil's Saddle by Norman Fox (1911-1960) was published in 1948 by New York's Dodd, Mead.
Wallace Q. Reid is a pseudonym for George Goodchild (1888-1969). The Man From Peace River was published in 1933 by Wm. Collins.
White Circle C4 - 1942
White Circle C4 back
White Circle CD414 - 1949
White Circle CD414 back
White Circle CD458 - 1950
White Circle 458 back
White Circle 287 - 1946