I've just gotten more detail on the Presbyterian and Unitarian Church endorsements of H.R. 676. It's noteworthy that besides endorsing the bill the Presbyterians also allocated money for 10 regional seminars on single payer health care.

On the Presbyterians, here's the report from Hal Sanders, the Pittsburgh activist who pushed for this along with three other local people:

Resolution to Endorse Single Payer Universal Healthcare

WHEREAS the General Assemblies of the Presbyterian Church (U.S.A.) and its predecessors have through the years called for reform of health delivery systems in the United States to make them accessible to the entire population.

WHEREAS the 1971 General Assembly of the UPCUSA called for a national health insurance “single payer” plan with the following words:

We find that our society is giving highest priority to the production and consumption of goods and to profit-making and the defense of wealth to the neglect of basic human needs including health.