Walnut creek 470 acre residential recreational complex planned at W. 170TH and Simms in Jeffco. Cervi's Journal S 30, 1970 p.26 Bonar Ranch being turned into recreation community - Walnut Creek. RMN Jy 17, 1971 p.56 Walnut Creek Development Corp. plans bankruptcy filing. Post F 4, 1976 p.17 Jefferson County subdivision has problems with plutonium from Rocky Flats. Post F 1, 1976 p.20 RMN F 11, 1976 p.5