Nielsen Hayden genealogy
Herringshaw's City Blue Book of Biography: New Yorkers of 1917, Ten Thousand Biographies ed. Mae Felts Herringshaw. Chicago: Clark J. Herringshaw, 1917.
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Title Herringshaw's City Blue Book of Biography: New Yorkers of 1917, Ten Thousand Biographies ed. Mae Felts Herringshaw. Chicago: Clark J. Herringshaw, 1917. Source ID S2680 Linked to (1) Harry Hartshorne Seabrook