Prehistoric cultural affiliation(s) include Archaic, Woodland, Et Al., Apishapa Focus, Graneros Focus, Panhandle Aspect, Late Archaic, Developmental and Divesification: Apishapa Phase dating back to 6999 BC.
The famous person Oliver E. Aultman is associated with one of more of the Las Animas County historic places.
Some of the country's most noteable architects helped create the Las Animas County places including Hugh Sullivan, Issac Hamilton Rapp, James Murdoch, James Knox Taylor, Isaac Hamilton Rapp, Works Progress Administration, Charles William Bulger, William Morris Rapp, Pueblo Bridge Co. and Civil Works Administration. Prominent architectural styles found in Las Animas Country are Late 19th And Early 20th Century American Movements, Late Victorian and Queen Anne.