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

• Title	Ancestry.com, U.S., Applications for Seaman's Protection Certificates, 1916-1940 (Lehi, UT, USA: Ancestry.com Operations, Inc., 2010).
  Short Title	U.S., Applications for Seaman's Protection Certificates, 1916-1940
  Repository	Ancestry.com
  Source ID	S204
  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 in Washington, D.C.
  Linked to (1)	Charles Perry Wilkes