The NEMHS is having our final show of the year this Sunday, 9/11. You should come down and take a peek, we'd love to meet you. This show is also our annual cookout and weanling futurity. The show is being held at Goddard Park in RI.
Jane=P has all the information and I think there is a post below regarding it.
The Colonial Miniature Horse Club has had AMHR shows. I believe you can put the club name in on google.com search engine and it will come up. There are quite a lot of AMHR shows in NY.
Just wanted to add that the NEMHS, which is an AMHA Club, is very active in New England and has several shows over the summer months. As Jane wrote there is one at Goddard Park in RI coming up. That will be the last show of the season.