This primary source comes from the Records of the U.S. Customs Service.
Full Citation: Certificate of Examination of the Crew for the Whaling Bark Charles W. Morgan; 10/31/1874; Records of the U.S. Customs Service, Record Group 36. [Online Version, https://docsteach.org/documents/document/certificate-of-examination-of-the-crew-for-the-whaling-bark-charles-w-morgan, May 22, 2025]