credit for the material in the links below goes to the staff
of The Chainbreak, NBC-Chicago's monthly newsletter.
This is an HTML version of that portion of the April, 1947 edition
of Chainbreak that dealt with the twenty-fifth anniversary
of WMAQ's first broadcast of April 13th, 1922 (albeit using
the call letters WGU). It is reproduced verbatim, except for
a few insignificant changes.