I was reminded today of the wonderful Eric Carle Museum of Picture Book Art in Amherst, MA. It's a bit of a hike from Brookline (over an hour's drive) but it's worth the trip if you're out in that area for other activities like apple picking. Here's the link to the museum's website: https://www.carlemuseum.org/
Right now the Carle Museum has an exhibit honoring the 50th anniversary of The Very Hungry Caterpillar, an exhibit about picture book creators Leo and Diane Dillon and and exhibit on Paddington the bear, created by Michael Bond. Lots for kids of all ages to enjoy. They have a beautiful library dedicated to picture books of all types and a drop-in art studio where kids can create their own art.
And don't forget the Boston Book Festival is coming up on Saturday, October 13! In addition to all the excellent authors of adult books, there are lots of esteemed children's and young adult authors who will be there. Here are just a few: