Ladd Petroleum Corporation, Denver, Co. No description specified. 1-2 (2 Records) Documents Survey of Cultural Resources for Ladd Petroleum Corporation's Proposed Trail Canyon No. 2-10 Well Line, Southern Ute Reservation, Colorado (1986) Survey of Cultural Resources for Ladd Petroleum Corporations's Proposed Southern Ute No. 2-25 Well Line, Southern Ute Reservation, Colorado (1986)