Lund, a Burlington-based agency that provides adoption, treatment and family support services to families across the state, recently welcomed four new members to its board of trustees. They are Donna Austin Hawley, executive vice president and chief human resources officer at Northfield Savings Bank; John Hollar, a retired partner at the law firm Downs Rachlin Martin; Darren Springer, general manager of Burlington Electric Department; and Anna Walls, customer experience officer at Mascoma Bank.