36 CFR 1200.14 - What are NARA's conditions for the use of the official seals and logos?
If your request is approved, you must follow these conditions:
(a) Use the official seals and/or logos only for the specific purpose for which approval was granted;
(b) Submit additional written requests for any uses other than the use granted in the approval letter;
(c) Do not delegate the approval to another individual(s) or organization without NARA's prior approval; and
(e) Only use the official seal(s) and/or logo(s) for the time period designated in the approval letter (example: for the duration of a conference or exhibit).