Bulletin. 523. Carbonizing properties, Tennessee coals from Jellico bed in Campbell County and Sewanee bed in Marion County [with list of Publications on survey of carbonizing properties of American coals]; by D. A. Reynolds, J. D. Davis, G. W. Birge, R. E. Brewer, D. E. Wolfson, W. H. Ode, and B. W. Naugle.