From Boston:

From Interstate 95 (Rte 128), take Rte.128 South to Rte. 9 West (exit 20B).
When exiting 128 to Rte. 9 West, stay to the right.
Turn right at first traffic light. Visitor parking and entrance to the building is on the right.

From Points North or South of Wellesley:

Take Interstate 95, (Rte. 128), Exit 20B to Rte. 9 West. Stay to the right.
Turn right at first traffic light. Visitor parking and entrance to the building is on the right.

From Points West:

Take Interstate 90, Massachusetts Turnpike, East to Interstate 95, (Rte 128).
Take Rte. 128 South to Exit 20B Rte. 9 West. Stay to the right.
Turn right at first traffic light. Visitor parking and entrance to the building is on the right.