This Gulf, Mobile & Ohio tranfer run is navigating the connecting track at Joliet Union Station between the northbound GM&O main to the eastbound Rock Island (seen running from left to right in the near foreground). The parallel GM&O and Santa Fe mains both cross the Rock Island here. By now the GM&O has been engulfed by Illinois Central Gulf, but no. 920 is still resplendent in the GM&O's final pre-merger color scheme.