He also wrote a biography of poet Melvin B. Tolson titled Melvin B. Tolson, 1898-1966: Plain and Poetic Prophecy. The book was reviewed in World Literature Today. In Rhetoric at the Margins: Revising the History of Writing Instruction in American Colleges, 1873-1947, author David Gold wrote, "Robert M. Farnsworth's finely balanced and carefully researched biography does little worse than suggest that Tolson's love for argumentation may have intimidated his children, who nonetheless respected him and loved him dearly." Farnsworth also edited Caviar and Cabbage: Selected Columns by Melvin B. Tolson from the Washington Tribune, 1937-1944. The book included selections from a weekly newspaper column on black culture that Tolson had written for seven years.
