 The Denver & Rio Grande Western Railroad (D&RGW or DRGW) was incorporated in 1920, and formally emerged as the new re-organization of the old Denver & Rio Grande Railroad on July 31, 1921.In 1931, the D&RGW acquired the Denver and Salt Lake Western Railroad, a paper railroad subsidiary of the Denver and Salt Lake Railroad, (D&SL) which had acquired the rights to build a connection between the two railroads.After years of negotiation, the D&RGW gained trackage rights on the D&SL from Denver to the new cutoff.