36 CFR 1280.26: Soliciting, vending, and debt collecting.

(a) On NARA property or in NARA facilities, you may not:

(1) Solicit for personal, charitable, or commercial causes;

(2) Sell any products;

(3) Display or distribute commercial advertising; or

(4) Collect private debts.

(b) The following activities are exceptions to the prohibitions in subsection (a):

(1) Participating in national or local drives for welfare, health, or other funds that the Office of Personnel Management authorizes or that NARA approves (e.g., the Combined Federal Campaign);

(2) Employees collecting non-monetary items such as food, clothing, or toys, as approved by the Archivist or his/her designee;

(3) Authorized employee organizations, including employee affinity groups, soliciting for membership dues or other organizational support, as approved by the Archivist or his/her designee; and

(4) Authorized charitable support organizations, like the National Archives Foundation or a Presidential library foundation (e.g., the museum store at the National Archives Building), conducting revenue-producing activities.