Mine accidents and their prevention, illustrated by 200 pictures taken in the mines by W. B. Bunnell, official photographer of the D. L. & W. R. R. company, for the instruction of mine-workers, especially adapted for the teaching of English to the non-English speaking people
Dague, John Huffman, 1881-; Delaware, Lackawanna and Western Railroad Company; Phillips, Samuel J., 1872-