Building Blocks. Dallas, Texas: Texas Scottish Rite Hospital for Crippled Children, Spring 1979

Building Blocks. Dallas, Texas: Texas Scottish Rite Hospital for Crippled Children, Spring 1979, Volume: Gilbert D165. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525389 Accessed December 27, 2025.