Union Pacific 4023

Union Pacific 4023 is a class 4-8-8-4 Big Boy built by the American Locomotive Company in Schenectady, New York in November 1944. It is one of eight surviving UP Big Boys being preserved across the United States, and the only surviving Big Boy that was part of the second group of locomotives built in 1944. All of the other surviving Big Boys were from the first group built in 1941.

Union Pacific 4023

Union Pacific 4023 is a class 4-8-8-4 Big Boy built by the American Locomotive Company in Schenectady, New York in November 1944. It is one of eight surviving UP Big Boys being preserved across the United States, and the only surviving Big Boy that was part of the second group of locomotives built in 1944. All of the other surviving Big Boys were from the first group built in 1941.