Four days before the release/signing party for The Making of an Icon: The Dreamers, The Schemers, and the Hard Hats Who Built the Gateway Arch, I’ll have my first radio interview. Mike Montgomery of Alton radio station WBGZ Radio, AM 1570, will quiz me on his “Matinee Madness” show at 3 p.m. today, April Fools Day. He’s a great interviewer and worked at the old Globe-Democrat in its heyday. If you can’t get the station, I believe you should be able to listen on line at http://www.wbgzradio.com. Either way, don’t forget to come to the party from 2-5 p.m. this Saturday (April 5) at the Tavern of Fine Arts, 313 Belt Ave., St. Louis.