Dear Mr. Robison,
Thank you for posting your request on History Hub!
In many instances, the instructor of a training facility paid for a civilian photographer to come to the base to take pictures. These photographs sometimes were filed in the records of the military unit but oftentimes they were distributed to the individual members without a permanent copy being kept.
If a group photograph was taken by the Marine Corps or other official military photographers, then the photograph would be considered permanent records and are part of the photograph collections in the custody of the National Archives at College Park - Still Pictures (RDSS). Please contact RDSS via email at firstname.lastname@example.org for more information about these photographs.
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 RDSS. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!