In the winter of 1860-61, Creighton surveyed the route of the proposed Transcontinental Telegraph line between Omaha and Sacramento, to be built with the financial support of Western Union. He dug the first post hole for the telegraph line on July 2, 1861; the line was completed on October 24, 1861.
During the winter of 1860-61, Creighton mapped the route for the Transcontinental Telegraph line between Omaha and Sacramento, which Western Union would fund. He dug the first post hole on July 2, 1861; the line was completed on October 24, 1861.