Very little is known of the early history of the St. Thomas Reformed Church in Gastown, but records show that it was organized by Reverend Wilhelm Weinel on September 24, 1840. Previous to this, the congregation had worshipped in the Plum Creek Presbyterian Church.
The first recorded communion was held October 23, 1841 when 31 members communed and a class of 31 was confirmed. At this time it was organized as a union church, union in that both Reformed and Lutherans worshipped together, and, according to records, participated in the same communion.
The church building was erected in 1866. The cost was to be $2000 and the old house. An Article of Agreement was drawn up between the building committee of the Reformed and Lutheran Church and J. P. Leech, Esquire, of Shelocta Borough for the following described building: The house was to be 45' x 50', built after the form of the Presbyterian Church in Elderton except the following alterations: stone work was to be 20 inches high with a range course on three sides, with four openings for ventilators; it was to be fourteen feet high with windows in proportion to height; the pews and pulpit were to be the same as the above-mentioned church except for the communion table.
The building was to be completed by December; it was to be paid for in three parts-$800 on the signing of the agreement, one-half of the balance when it was under roof, and the balance paid upon the completion of the structure. Final payment was to Mr. Leech on January 5, 1867. The building committee who signed the agreement consisted on John Sell, Luke Bierer, and George Rearick.
The first recorded communion was held on May 26, 1867 by Reverend L. Wise, and 42 people received communion and a class of five was confirmed. Elders at the time were Jacob Thomas, Casper Kaufman, and George Rearick. Deacons were Nicholas Reefer, Jacob Baker, and John Sell.
The building was remodeled in 1902 during the pastorate of Reverend W. H. Kerschner. The flat roof was changed to a comb roof and two single doors were replaced by a double door entrance. Also anew wood ceiling and two-coat plastered walls were added.
In 1916 the church was made apart of the South Bend Charge. The membership at that time was 80, and the consistory was as follows: Elders Nicholas Reefer, Maurice Timblin, and John Boyer and Deacons Mellon Thomas, Marley Penrod, and Kelly Reefer.
In 1950-51 the basement was added, which made space for more Sunday School rooms and for various social activities. In 1956 a back entrance was built to the church with money donated by the Sunday School. New carpet was purchased in 1958, and in 1966 the interior of the church was redecorated, The old wallpaper was taken off, the plaster was repaired and.the walls were painted. New hardwood flooring was laid, and anew mural was placed on the front wall of the church. In the early 1990s, the exterior was changed with a new roof and aluminum siding. Later, padded seat covers were added the the pews
The following ministers have served this church with love and devotion: William Weinel (1840-53); L. Wise (1853-76); M. H. Dieffenderfer (1877-81); A. K. Kline (1881-84); A. C. Snyder (1885-87); A. M. Keifer (1889-90); W. D. Leferore (1890-93); L. W. Showers (1895-1900); I. A. Sites (1901-02); W. H. Kerschner (1903-14); J. I. Lauffer (1916-18); J. N. Garner (1919-1921); A. S. Kresge (1921-25); C. L. Bash (1925-29); Sarkis Papajien (1929-34); D. N. Nace (1934-38); L. 0. Carbaugh (1939- 41); Clarence Bower (1942-46); Max Miller (1946-49); George Geisler (1949-51); Jacob Painter (1951-58); Alvin Master (1959-64); John Kautz (1964-75); Harrison Davidson (1975- 1986); August Thalman (1987 - 1989; Ken Tack (1989 - 1991); Fred Drayer (1992 - 1996); Rev. Herman Ridley (1996 - ).