They feature two conferences each year, one in New York in the winter and one in Los Angeles in the summer.
Mara Price is a member I recently met through that organization. I love her colorful illustrations. Her forthcoming bilingual picture book (illustrated by Lisa Fields) will be released soon by Arte Público Press/Piñata Books.
Check out Mara's website at http://www.maraprice.com and her blog at http://www.maraprice.blogspot.com.