Congress had passed acts promising land grants to the first railroad to reach the Kansas border via the Neosho Valley. The Katy portion of the former UP Southern Branch, which had begun building from Fort Riley just north of Junction City, Kansas, was in a heated competition for the prize. On June 6, 1870, Katy workers laid the first rails across the Kansas border, winning the race. Congress' promised land grants were never made, as the courts overturned the grants because the land was in Indian Territory and was the property of the Indian tribes.