Use of Miniature X-Ray Films in Tuberculosis Case Finding Bruce H. Douglas, Carl C. Birkelo, Gaius E. Harmon, and Henry F. Vaughan CopyRight*Read before the Epidemiology Section of the American Public Health Association at the Sixty-ninth Annual Meeting in Detroit, Mich., October 9, 1940. https://doi.org/10.2105/AJPH.30.12.1427 Published Online: August 29, 2011