Ancestry.com, U.S., Applications for Seaman's Protection Certificates, 1916-1940 (Provo, UT, USA: Ancestry.com Operations, Inc., 2010).

• Titel	Ancestry.com, U.S., Applications for Seaman's Protection Certificates, 1916-1940 (Provo, UT, USA: Ancestry.com Operations, Inc., 2010).
  Kurztitel	U.S., Applications for Seaman's Protection Certificates, 1916-1940
  Aufbewahrungsort	Ancestry.com
  Quellen-Kennung	S291
  Text	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.
  Verknüpft mit	CRAGO, Orval Monroe NAIRNE, George Gordon