Along with this somewhat pedestrian report from 1898, I'll at a link to an earlier entry - A Tale of a Turkeyless Thanksgiving.
Boston Daily Globe Nov. 25, 1898.
Thanksgiving Services of Protestant Churches at Jamaica Plain.
A union Thanksgiving service was held yesterday morning in the Universalist church on Rockview st, Jamaica Plain. It was attended by members of all the Protestant churches of Jamaica Plain, and held under the auspices of the Fraternal Council. All the members of the council - ministers of the various churches - assisted at the service, with the exception of Rev Mr Grose of the Methodist church, who was unavoidably prevented from being present.
Rev R.M. Hunt of the Baptist church read the opening responsive service. The offertory and hymn were given by Rev Mr S. Learman of the Episcopal church. Prayer was offered by Rev C.F. Dole of the Unitarian church and Rev C.L. Morgan read passages from the scriptures. Rev Mr Hildreth of the Episcopal mission of Boston read the Thanksgiving proclamation.
The sermon was preached by Rev W.R. Libby, pastor of the church. He took for his subject “Prosperity, Patriotism and Religion,” embodied in the proclamation, and said we should be thankful for the present prosperity, the genuine patriotism in the heart of the nation and the universal religion which seems to minister to our spiritual needs.
Wednesday, in response to the call of the Fraternal council, contributions of food were received by a committee appointed by the council, and yesterday more than 40 families in Jamaica Plain were provided for from the amount received.