On sale date as given in the copyright application as listed in the Catalog of Copyright Entries, Periodicals, January-June 1948, page 32, registration number B136001.
Letters from Bruce A. Agnew, Robert E. Young, Ed Osborn, Al Kaminski, Ida Owens, David S. Boor, Roy Eugene Taylor, Joseph Mishikitis, Hugh Elliott, and Anne L. Owens.
Letters from Arnold Maurice Goldblum, Jay Franklin, G. A. Stegall, J.D.V., Herbert L. Turney, Evelyn A. Long, and Merlin Meng.
Signature spotted by Gary Watson, September 2009.