National Society Daughters of the Union 1861–1865

National Society Daughters of the Union 1861–1865
AbbreviationNSDU
EstablishedJanuary 9, 1912 (1912-01-09)
FoundersMrs. Frank Crowell
Founded atNew York City, New York, U.S.
Typelineage society
Sue Bensinger Petres
Websitensdu.org

The National Society Daughters of the Union 1861–1865 (often abbreviated as NSDU) is an American lineage society for women who descend from Union veterans of the American Civil War.