List of mines, operators and purchasing agents :
Halberstadt's general map of the bituminous coal fields of Pennsylvania : 1907 /
compiled and published by Baird Halberstadt.
APA Citation
Halberstadt, B. (1907). List of mines, operators and purchasing agents: Halberstadt's general map of the bituminous coal fields of Pennsylvania : 1907. Pottsville, Pa.: [s.n..
MLA Citation
Halberstadt, Baird, 1860-1934. List of Mines, Operators And Purchasing Agents: Halberstadt's General Map of the Bituminous Coal Fields of Pennsylvania : 1907. Pottsville, Pa.: [s.n., 1907.
Warning: These citations may not always be complete (especially for serials).