Author
North Pennsylvania Railroad Company
5
Fernon, Thomas S. 1818-1896
3
Central Railroad of New Jersey
2
Graebner, William
2
Alleghany Railroad and Coal Company
1
Beaver Meadow Railroad and Coal Company
1
Brown, Stuart E. 1916-
1
Joseph Walker & Sons
1
Lauck, W. Jett 1879-1949
1
Philadelphia
1
Philadelphia & Reading Railroad Co
1
Philadelphia (Pa.). Councils
1
Philadelphia and Reading Coal and Iron Company
1
United Mine Workers of America
1
United States Anthracite Coal Commission
1