You are in the CarrTracks website Picture Gallery.
This train picture gallery covers the Fort Worth and Galveston Subdivisions from Cleburne south to Temple then southeast to Rosenberg, TX. A group of Galveston businessmen had a vision of building a railroad into Texas and incorporated the Gulf, Colorado & Santa Fe Railway Company in 1873. Actual construction began in 1875 and stopped at Arcola in 1877 because of poor financing. With more financial backing the building started again in 1879 and reached Rosenberg by the end of the year, and Cameron by the end of 1880. In 1881 the line was extended north through Temple and Cleburne to reach Fort Worth. In 1922 the railroad added automatic block signals from Temple to Somerville (77 miles). In 1925 the railroad added signals from Cleburne to Meridian. Signals were extended to Temple in 1926. It is hard to find information on when block signals were added to other segments, but in 1939 the southern end of the railroad had ABS between Bellville and the SP crossing at Rosenberg (40 miles) plus Alvin and Galveston (28 miles). The 30 mile stretch between Rosenberg and Alvin was still dark territory. There were also signals between Alvin and the New South Yard in Houston. The Gulf, Colorado & Santa Fe Railway Company was merged into the Atchison, Topeka & Santa Fe Railway Company in 1965. CTC was completed between Temple and Alvin in 1975. Then north from Temple to Fort Worth in the early 1980s.
As reference, I've added the Fort Worth and
Galveston Subdivision timetables. The pictures
in this Gallery can be found on disk 108 and 109.