BELFAST — Fifteen Knox, Hancock and Waldo County authors have banded together to form a loose collective to market their books. “Locally Grown Books” will be available at the open-air Art Mart of Waterfall Arts every Friday from June to Sept. from 9 a.m. to 1 p.m. The Art Mart is open simultaneously with the weekly Farmers Market at 256 High St.

More than 30 titles will be on display — poetry, fiction, memoir, children’s books, art and photography books, hand-made journals, broadsides, and hybrid genre books. Authors include award winners, printmakers, a playwright, six Belfast Poets Laureate, performance artists, a rock and roll journalist, and painters.

Participants are Patsy Baldus, Sharon Bray, Laura Bonazzoli, Linda Buckmaster, Suzanne d’Corsey, Elizabeth Garber, Judy Kaber, Joel Lipman, Leslie Moore, Tom Moore, Ellen Sander, Betty Schopmeyer, Deb Shepherd, Karin Spitfire and Kim Yesis.