For miners and price of coal, Callaway to Adams, Aug. 19, 1885, UP, SG2, ser. 1, box 289, f. UPR Emply Rel.
Testimony of James Maxwell Clark, PRC, 4:1825-28, Testimony of Thomas Patterson, PRC, 4:1870-72, Testimony of E. A. Slack, PRC, 4:2083-85, Testimony of C. W. Riner, PRC, 4:2085-88.