Dear Mr. Brack,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 5 record series in the Records of the U.S. Customs Service (Record Group 36) created by the Port of Entry, Plymouth. These records have not been digitized and are not available online. For more information about these records, please contact the National Archives at Boston (RE-BO) via email at firstname.lastname@example.org.
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 RE-BO. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!