[2] In December 1883, the Reverend Addison Blanchard, superintendent of missions for the Colorado and Wyoming Congregational Church, visited Buffalo.

He found that there were a few families who wanted to participate in a "union church" on the "simple basis of pure Christianity in which minor differences of opinion and forms should be tolerated...."[3] In February 1884, Buffalo's first resident pastor, Revenend George C. Rock of Philadelphia arrived, and he preached during the next eight months.

On October 13, 1884, Superintendent Blanchard organized the Union Congregational Church of Buffalo, with ten founding members.

[3] The National Register nomination includes a description of the building: "Situated on the top of a steep hill, the church was a plain, gable-roofed, rectangular, frame structure about 26 x 29 feet, with the length running north south.

The exterior finish was unusually narrow beveled siding (less than three inches weather exposure) which is preserved on the present church.

The builders added some decoration in the exposed rafters which were carved and pierced and backed by a dentate-carved board, still visible today on the east side of the church.

A fire in 1922 damaged the interior of the first floor, and destroyed the large stained glass window on the west side of the sanctuary.