Compare Constellations

Information: The first column shows data points from Langdon, John, 1741-1819 in red. The third column shows data points from Langdon, John (Portsmouth, N. H.) in blue. Any data they share in common is displayed as purple boxes in the middle "Shared" column.

Name Entries

Langdon, John, 1741-1819

Shared

Langdon, John (Portsmouth, N. H.)