Coal — Audiobooks
The Mentor: The Story of Coal, vol. 6, Num. 6, Serial No. 154, May 1, 1918
by Charles Fitzhugh Talman
Coal and the coal mines
by Homer Greene
Coal, and What We Get from It
by Raphael Meldola
The Story of a Piece of Coal: What It Is, Whence It Comes, and Whither It Goes
by Edward A. (Edward Alfred) Martin
The Coming of Coal
by Robert W. (Robert Walter) Bruère