Here is a link to the Mountain Dulcimer Society group in Cleveland....It's a private facebook group, so you have to join it....hope it helps in your quest...

https://www.facebook.com/groups/1141536416794682/

Hi, 

I live on Lake Erie about 30 minutes west of Cleveland, Ohio. Is there anyone within a reasonable distance who would could meet with me for dulcimer lessons? Doesn't matter if its a business or a helpful individual. I'm a dulcimer beginner, but I have played guitar and ukulele for years. I'd just like to start out right and learn the proper fundamentals. I'd appreciate any suggestions or advice.