Caption continues: "…and a pioneer link in the Central Pacific, had been moved by early 1860 from Third and R Streets to larger quarters alongside the river docks at Front and K Streets. This provided a better connection not only with the heavy shipping that plied the river to and from San Francisco, but also with the Central Pacific, whose station is pictured in the background. Taken in 1869, this photo shows a CP freight train that has moved past the CP station to a point in front of the Sacramento Valley Rail Road. Southern Pacific Photo X 30."