Big Pappi is out of his slump and there's a micro in the woods with his name on it. This cache is located just beyond the outfield at the Chelmsford Little League Fields. There is plenty of parking nearby.
Stealth may be required at certain times to get close to the cache zone, but the trees & bushes will provide cover while you search. Bring a glove and you might make a catch.
Update 7/15/2011: This cache has been muggled a few times, probably by folks searching for balls, so I decided to move it a little farther into the swamp to a less conspicuous location. The area can get muddy but I've never seen it fill with water--the new GZ should be reachable via a strip of higher ground. No problem with PI there and it's a geo-obvious location.