NEW HAVEN >> A medical foundation that's part of Yale-New Haven Health System, Northeast Medical Group, has donated more than 7,000 children's books for youngsters served by the Branford-based nonprofit Read to Grow, according to a press release from NEMG.The donation was the largest in the history of Read to Grow, which provides free books to children and families across Connecticut, as well as early literacy information and workshops, the release said.