U.S. Code of Federal Regulations
Regulations most recently checked for updates: Oct 20, 2019
§ 21.4 - Occupancy under permit of privately owned cabins on recreation areas and conservation areas.
§ 21.5 - Occupancy under permit of Government-owned cabins on public recreation and conservation areas.
§ 21.6 - Cabin site occupancy where a recreation or conservation area has been leased to, or turned over to, another Federal or non-Federal public agency for administration.