You have a statutory right to inspect a large number of public records ( Chapter 66 sec 10a-MGL).  You may need to pay a fee but that must be reasonable to cover the cost of searching, redacting copying and so forth.  The custodian of the record has up to 10 days to refuse or comply with the request.  It must be denied in writing and you can appeal.

 It is very similar to the Federal law.  Every record made or recieved by the govt. is presumed to be a public record unless a specific statutory exemption permits or requires it to be witheld in whole or in part.