1. A day with Freeman Tilden Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Mahaffey, Ben D. (author) Format: Journal article Publication Date: 1971-06 Published: USA Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C13932 Journal Title: Journal of Environmental Education Journal Title Details: 2(4) : 30-31 Notes: See C13905, 2 p.