Site of "Old Adobe". John McCullough (1805-1870) was ordained a Presbyterian missionary in 1835 and came to Texas three years later. In 1844 he and Methodist missionary John W. DeVilbiss held the first Protestant worship service in San Antonio. McCullough later returned to San Antonio and helped organize the city's first Presbyterian church. He was also instrumental in building a church structure at this site in 1847. Known as "Old Adobe," the building was made of plastered rock and had dirt floors. It was open to all Protestant denominations and served San Antonio until the 1860s. (1965) #13322