Author
Pennsylvania
2
Roberts, William F.
2
Alleghany Railroad and Coal Co
1
Alleghany Railroad and Coal Company
1
Conner, Eli T.
1
Griffith, William, 1855-
1
Lea, Isaac, 1792-1886
1
Pennsylvania. Board of Commissioners for the Second Geological Survey
1
Pequa Railroad and Improvement Company
1
Slocum Coal, Iron and City Improvement Company
1
Stafford Meadow Coal, Iron and City Improvement Company
1