We will meet at the at the Liberty Springs and Whitehouse trailheads parking lot.  This trailhead is accessed by leaving Interstate 93 at Exit 34A - the first exit inside the Franconia Notch Parkway.  There will be a sign there directing you to the Flume Visitors Center.  Head in that direction, but instead of entering into the Flume Visistors parking lot, continue north about 200 yards where you will a sign directing you to turn into the the "Trailhead Parking" on the right.  Enter here, and park anywhere.  You should have a WMNF parking sticker or a daily pass, to park here.