From Hutchinson River Parkway (North):
Take exit 27 for NY-120 N.  Turn left onto NY-120 N / Purchase Street for 1.3 miles. The library will be on your right.

From Interstate 684:
Head south on I-684 S.  Take the Interstate 287 W exit toward White Plains, follow signs for Westchester Avenue and merge onto Westchester Avenue.  Keep right to stay on Westchester Avenue, make slight right onto Anderson Hill Road.  Turn left onto Purchase Street. The library will be on the right.