25 C.F.R. § 152.26 – Advertisement.

(a) Upon approval of an application for an advertised sale, notice of the sale will be published not less than 30 days prior to the date fixed for the sale unless for good cause a shorter period is authorized by the Secretary.
(b) The notice of sale will include:
1. (1) Terms, conditions, place, date, hour, and methods of sale, including explanation of auction procedure as set out in § 152.27(b)(2) if applicable;
2. (2) Where and how bids shall be submitted;
3. (3) A statement warning all bidders against violation of 18 U.S.C. 1860 prohibiting unlawful combination or intimidation of bidders or potential bidders; and
4. (4) Description of tracts, all reservations to which title will be subject and any restrictions and encumbrances of record with the Bureau of Indian Affairs and any other information that may improve sale prospects.