Page 11 in Lucinda Crile, Review of Extension Studies - January to June 1950, Extension Service Circular 470, U.S. Department of Agriculture, Washington, D.C. July 1950. Summary of findings from analytic studies of four phases of extension work in Colorado, Colorado Agriculture College Extension, Fort Collins. 1950. 12 pages., Includes analysis of changes in older youth activities by agricultural and home Extension workers during that period.