Dear Ms. Junod,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 450 file units & 134 items in various record groups and record collections that include the phrase “seal of approval.” Most of these records have been digitized. For information about the non-digitized records, please contact the reference unit listed in the record description.
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 various NARA reference units. We apologize for this inconvenience and appreciate your understanding and patience.
We also searched the internet and located several organizations such as the Carpet and Rug Institute, the National Parenting Center, and the Joint Commission that provide a “seal of approval” for various products or organizations.
We hope this is helpful. Best of luck with your research!