There is a lot of information out there on the web. In addition to the web pages of the farms themselves (go to the "Where Can I find Local Food?" page for those), there are other sources of infomation. Here are just a few that I've found to be useful:

Stillman's at The Turkey Farm Meat CSA This is a Massachusetts meat CSA. Their motto: " Our farm offers conscientiously raised, grass-fed and pastured, hormone-free meats and poultry. We believe in raising our animals in a manner that is humane and respectful, a respect that extends not only to our animals but to our land as well. Our sustainable, more holistic approach to animal husbandry yields better tasting, safer, and more nutritious meats and poultry.
This is our Conscientiously Grown philosophy." http://www.stillmansfarm.com/meatcsa.html

The 100 Mile Diet
This couple started it all for a lot of people. For a year they only ate food that was made/grown within 100 miles of where they lived in Vancouver.
http://www.100milediet.org/

Eat Wild.
A great source of information on Grass Fed meat.
http://www.eatwild.com/products/massachusetts.html

New England Small Farm Insitute
A great source of info for and about samll farmes in New England.
http://www.smallfarm.org/

Local Harvest
Dedicated to making is easier for you to find local food.
http://www.localharvest.org/

Massachusetts Association of Roadside Stands and Pick Your Own
Another good source for info on local food producers.
http://www.massfarmstands.com/

The Food Project
A great project - showing that sustainable agriculture is accessible to everyone.
http://www.thefoodproject.org/

Seeds of Change
A fantastic source of heirloom variety seeds.
http://www.seedsofchange.com/

Green Marlborough
This site strives to bring a bright Green future to all of Marlborough.
http://www.greenmarlborough.org/