As mentioned, the Children's room and good beginnings are awesome and in your area. There's also a baby playgroup Mondays at the Richmond library that used to be great but I haven't managed to catch it with my youngest yet. Dorothy Alling memorial library in Williston has a once a month baby-centered group, next one is Dec 7th. They just started this fall so it's still a super small group, but we've had a good time when we've gone. There's also a paved bike path behind the school there which is perfect for a stroll after. Findandgoseek.net has an awesome calendar of events and groups too. I tend to go more for baby specific groups, they're usually not as loud so it's easier to make parent friends. "Pre-school" story times/playgroups are great but usually way more crowded and only really fun once you hit toddlerhood.