Compare Constellations

Information: The first column shows data points from Blackwell, H. B. in red. The third column shows data points from Blackwell, Henry Browne, 1825-1909 in blue. Any data they share in common is displayed as purple boxes in the middle "Shared" column.

Name Entries

Blackwell, H. B.

Shared

Blackwell, Henry Browne, 1825-1909