SHPO Review and Compliance, Cheyenne, WY No description specified. 1-2 (2 Records) Documents Letter Report: a Cultural Resource Survey for Exon Company, U.S.A., Rattlesnake Federal #1 Well Pad and Access, Campbell County, Wyoming (1982) Letter Report: a Cultural Resource Survey for Exxon Company, U.S.A., Bridge Draw Federal B-1 Well Pad and Access, Campbell County, Wyoming (1982)