Compare Constellations

Information: The first column shows data points from Seckerson, H. A. (Howard Arnold), 1877- in red. The third column shows data points from Seckerson, H. A. in blue. Any data they share in common is displayed as purple boxes in the middle "Shared" column.

Name Entries

Seckerson, H. A. (Howard Arnold), 1877-

Shared

Seckerson, H. A.