The city of Gardiner, Maine, has had a vaudeville theater (Johnson Hall) for at least 20 years — most if not all of that time it has been a mostly if not entirely volunteer operation. I don’t know any specific contact person, but the Johnson Hall phone nmber is 207-582-7144. Gardiner probably has a municipal web site, and you might find some Johnson Hall information posted there.
A key catalyst in the birth and early development of Johnson Hall was a talented veteran vaudevillian, Benny Rheel (now deceased). I think that some of the enthusiasm has cooled since Benny’s passing, but that’s probably an inevitable result when so much has been done by a single key individual who then leaves the stage.