J.,
I met a lot of wonderful moms through a baby massage class that was offered through the York Hospital. I believe the cost was $30 total for three Saturday sessions. Most of the moms had infants the same age as mine and we developed a play group after the class. We are still meeting and our little ones are all turning 1 year old.
My church (Church of the Open Door-off of Rt.74) has a Mom and Me group that meets the second and fourth Tuesday of the month from September through March. The times are 9:00-11:00am. Children are taken care of by wonderful helpers so the moms can have some time together in Bible study, prayer, and discussion groups. We only have 3 meetings left for this year, but you are welcome to join us. We also have occasional meetings in the spring and summer months to keep connected (park play dates, libraries, etc.)
One other option, I am taking my little girl to the Red Lion (Kaltreider/Benfer) Library for baby story time. They offer it on Thursdays at two different times. The first is 10:15 and the second is 11:15. The volunteers that run the program are great.
Hope this helps,
Jen