have you checked out ancestery.com ?
they have census records, and web-links to
other geneological archives like the morman church.
pretty much an geneologist's dream
at the ri historical society library, they have transcriptions
of all the grave markers voter registrations records, street directories &C
to help you in that department ...
but ancestory.com is free and easy and might some more information and
save you some $ and a drive.