Compare Constellations

Information: The first column shows data points from New-York and Schuylkill Coal Company in red. The third column shows data points from New York & Schuylkill Coal Company. in blue. Any data they share in common is displayed as purple boxes in the middle "Shared" column.

Name Entries

New-York and Schuylkill Coal Company

Shared

New York & Schuylkill Coal Company.