| UP 4019 thunders through East Ogden in January, 1946. 4019 was equipped with smoke deflectors reminiscient of the FEF series for a short period of time in 1946. The experiment is not completely documented, but it seems like the 1946 UP knew that in 2021, the UP Steam Fleet would consist of a Big Boy and an FEF. Obtained from Union Pacific Steam: Big Boy Portraits (Bush, Ehernberger) |