Dear Mr. Muhonen,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the following results for Coast Guard Reserve and Coast Guard Auxiliary for the 1940s in the Records of the Coast Guard (Record Group 26) that may contain relevant records. Also, there may be relevant records in the correspondence, histories, and other records of Coast Guard Districts. For more information about these records, please contact the references units listed as the contacts in the Catalog descriptions.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from the various NARA units. We apologize for this inconvenience and appreciate your understanding and patience.
We also suggest that you contact the Coast Guard Historian's Office. In particular, their U.S. Coast Guard Auxiliary Historical Bibliography and The U.S. Coast Guard in World War II - The Auxiliary, Reserve, Women's Reserve, and Temporary Reserve Programs Historical Bibliography lists a number of sources relating to this topic. Additionally, the Coast Guard Heritage Museum and the National Maritime Historical Society may be able to assist you with this topic.
We also searched online and located the following web pages on the topic:
We hope this is helpful. Best of luck with your research!