From east of Concord: Take Route 2 west towards Concord. At the light where Route 2 takes a left turn at a Mobil station as you are coming down a hill, get in the far right lane to go straight, on Cambridge Turnpike, towards Concord Center. Take the first right on Hawthorne Lane. When Hawthorne Lane ends at the intersection with Lexington Road, take a right on Lexington Road. Take the second left (after Edmonds Road), onto Old Bedford Road. Take a left on Meriam Road. The Ripley Building is at the end of this dead end road. The parking lot is on your right.
From west of Concord: Take Route 2 heading east. After staying on Route 2 at the rotary at the Concord Prison, take 2nd exit (left) onto Elm Street, which is at a light where there is a left turn light. At the end of the exit ramp, take a right onto Elm Street. At the end of Elm Street, turn left on Main Street. Go all the way through Concord Center, and take a right on to Lexington Road. Take a left on to Old Bedford Road and then a left on to Meriam Road. The Ripley Building is at the end of this dead end road. The parking lot is on your right.
From north or south of Concord: Take Route 495, which runs north and south west of Concord, to the Route 2 exit and follow the directions for coming from west of Concord, or take Route 95 (same as Rt 128), to the Route 2 exit and follow the directions from east of Concord.