This article reassesses the Fred Newton Scott and Joseph Villiers Denney collaborative textbook authorship by emphasizing Denney's generally overlooked contributions to that coauthorship and to the field of composition generally. Through an examination of Denney's scholarly work and his personal correspondence with Scott during the period marking their collaborative textbook writing, this article asserts that Denney, like Scott, was an innovative theorist and practitioner in his own right, and that the effectiveness of the Scott-Denney textbooks owes much to Denney's role as coauthor. (Contains 8 notes.)