“Woolly Mammoth” Waltham is at 180 Elm St. off of Main St (Rte. 20), which is quite close to downtown (Moody St). If you get to Main St. and can find your way to Town Hall, then your bearings should be that off to the right of the Town Hall common is Moody St . However, off to the left of the common is Elm St . Now once you've left Main St. for Elm St. , you will follow Elm over the Commuter Rail tracks. Hug Elm to the right, pass the Waltham Car Wash on your right, now you are crossing Charles River and a baseball/basketball field is on your left. Looming large is a 3 story grey industrial building, "The Hathaway ", just past the park on the left . That's us! Parking can be found in the lot on the left inside the building's court/lot. If that is filled up, I would suggest calling me upstairs (781-209--0678 or 781-367-3404) so that I can assist any load in via elevator and then parking can be had along the baseball field, or the French American club lot (last choice, not always kosher). I hope this is not too confusing and once you've been there its easy afterwards. Oh yeah, we are on the 3 rd floor!