This photograph of the Greenville union church building is from the Rev. J. Earl Gindlesperger's 1941 book "The Wills Creek Charge".
The following links take you to records of the old Greenville Union Church in Greenville Township, Somerset County, Pennsylvania that was shared by Evangelical Lutheran & German Reformed congregations. Regarding the building, the Rev. J. Earl Gindlesperger's 1941 book "The Wills Creek Charge" states, "In the spring of 1848, plans were made for the erection of a union church building. From Jacob Diehl a site near the old schoolhouse was secured. The cornerstone was laid July 15, 1848 ... Both congregations continued to worship in the old union church until 1910, when the Lutherans withdrew to build a church for themselves across the road from the old church. The Reformed people purchased the Lutheran interest and continued to use the old church until July 3, 1913, when it was destroyed by fire of unknown origin."