Robert L. Bowman, "The History and Development of the Spectrophotofluorometer," Fluorescence News 8 (1974): 1-8.

R. L. Bowman, P. A. Caulfield, and Sidney Udenfriend, "Spectrophotofluorometric Assay in the Visible and Ultraviolet," Science (1955): 32-33.

Sidney Udenfriend, "Development of the Spectrophotofluorometer and Its Commercialization," Protein Science 4 (1995): 542-55.

Robert Kanigel, Apprentice to Genius: The Making of a Scientific Discovery (Baltimore: The Johns Hopkins University Press, 1986).
This book discusses the mentor-student relationship in the sciences, focusing on the chain between Bernard Brodie, Julius Axelrod, Solomon Snyder, and Candace Pert. It includes information about the Goldwater antimalarial group and NIH in the 1950s and 1960s.

Robert L. Bowman's papers are held at the Stetten Museum, National Institutes of Health, Bethesda, Maryland.

James Shannon's papers are held at the National Library of Medicine, including correspondence, talks, articles, reports, and photographs.

Julius Axelrod's papers are held at the National Library of Medicine, including lab notebooks, research reports, correspondence, speeches, and photographs.