Dr. Clifford M. Drury was a pastor and notable author and historian on the West Coast between the 1920s and 1980s. The A. Wilfred and Verna Welch Letters from Clifford M. Drury houses letters from Dr. Clifford M. Drury, and later Joyce and Dean Drury, to Arthur Wilfred and Verna Welch of Walla Walla regarding the publication of several of his books.