Your attorney may be able to get access to docs.
If there are issues that affect ownership, then you might find info in the Reg. Of Deeds, too.
If you aren't using one, I would contact a local real estate professional to help with this answer and to save time and money.
(I'm on the Cape, but I can help you choose a local pro if you want help doing so.)
(Please note: when you choose an answer as a Best Answer, or at least give a thumbs up, it helps those who answer questions here.)
Best of luck,
Melody Gaeta, Realtor