Ancestry.com - U.S., Applications for Seaman's Protection Certificates, 1916-1940
Original source: Application for Seaman's Protection Certificates, 1916-1940. 1151 Boxes. NAID: 2788575. Records of the Bureau of Marine Inspection and Navigation, 1774-1982, Record Group 41. The National Archives at Washington, D.C. Ancestry.com has searchable indexes; database results and some digitized images are available with a fee-based subscription. Free articles and helpful research materials.