The following is from the Preserved Stories archives. We never actually set up such a group; we did not need to.
Anyway, here is what we posted at the time:
We welcome new members. There is no fee to join Save Sam’s Homestead.
If you would like to make a small donation to help cover incidental expenses related to this group’s work on behalf of the community, please send us an email at firstname.lastname@example.org and we’ll make the arrangements.
Similarly, if you wish to help out with volunteer work on behalf of the group, please send us an email.
Among other things we need help with incorporation of the group, and arranging for its registration as a charitable organization.