This information is from the Society for the Preservation and Advancement of the Harmonica (SPAH) newsletter, Harmonica Happenings, Fall 2008 issue.
HARMONICA CLUBS-IOWA, USA
IOWA HARMONICA PLAYERS-SPAH MEMBERS (2008)
Kim Abbott, Clinton, Iowa: Phone: 563-243-2263; E-mail: Wally@usa.net
; Web: http://www.bluzharp.com
James E. Merritt, Des Moines, Iowa: 515-979-2349; email@example.com
Ronald B. Reiff, Council Bluffs, Iowa: 712-366-5796; firstname.lastname@example.org
Wesley Seaver, Fort Dodge, Iowa: 515-573-2365; email@example.com
Andrew Sherburne, Coralville, Iowa: 319-351-2000 ext. 161; firstname.lastname@example.org
(Andrew teaches 5th-8th graders to play the harmonica at West Music).
We hope that you'll find a few interested players from the above list. Probably none of them play bass harmonica, but they might play slide chromatic or diatonic harmonica.