Jay Honeck wrote:

Our annual Sertoma (SERvice TO MAnkind) breakfast will be held here in
Iowa City on Sunday, August 28th.

The Lafayette, La. Sertoma club does a 2 day show at KLFT as well,
usually in October...

Sertoma Cajun Air Festival
http://www.sertomaair.com

Maybe it was their last one?