Look at the aerial of the TAG yard. Search Alton Part, Tennessee. You’ll have to pan south a little bit to find it. Note the turntable is still in place in 1955 image but it appears to be gone in the 1958. Likewise, a little East you find the original CofG yard with no sign of Cummins yard. In the 1958 image, the new Cummins yard is in place but the footprint of the original yard is still visible. Note also that Rossville Boulevard is uncut in both images, because the NC&StL had yet to be rerouted and Southern had yet to be elevated.
Warren
Warren Stephens