43 C.F.R. § 423.27 Advertising and public solicitation.
Title 43 - Public Lands: Interior
You must not engage in advertising or solicitation on Reclamation facilities, lands, or waterbodies except as allowed under a valid contract with Reclamation, or as allowed by a permit issued pursuant to subpart D of this part 423.
Title 43: Public Lands: Interior
PART 423—PUBLIC CONDUCT ON BUREAU OF RECLAMATION FACILITIES, LANDS, AND WATERBODIES
Subpart C—Rules of Conduct
§ 423.27 Advertising and public solicitation.

