Overland Assoc. , Boulder, Co No description specified. 1-3 (3 Records) Documents Cultural Resource Inventory of the Van Etten Land Exchange (1984) Cultural Resources Inventory of the Blackhawk Timber Sale, Pactola Ranger District, Black Hills National Forest (1984) Cultural Resources Inventory of the Horse Timber Sale, Pactola Ranger District, Black Hills National Forest (1984)