Dear Mr. Hickman,
Thank you for posting your request on History Hub!
Logbooks of U.S. merchant vessels from the 1960s are filed in the Records of the US Coast Guard (RG 26) and are located in the regional branches of the National Archives based on the port in which log was turned in. We searched the National Archives Catalog and located Official Merchant Vessel Logbooks, 1942 - 1978 which includes a listing for logs of the Cape Edmont in boxes 78 and 79. The Catalog does not specify which dates are available for this specific ship. To access these logs, contact the National Archives at Atlanta (RE-AT) via email at firstname.lastname@example.org. There may also be additional logs in other National Archives regions.
We hope this information is helpful! Best of luck with your research!
[information provided in part by Nate Patch, Subject Matter Expert]