I use the attached 1876 map in my presentations. It was dated before the TH&L was constructed to South Bend, but is otherwise accurate.
Just to the left of the red “Eel River” is the ERR’s original roundhouse, north of the track just east of present-day Garden St. When PRR acquired the ERR in 1901, PRR built the larger roundhouse where the Pepsi and Exide factories are now located, north of the track, west of 3rd St. and south of Water St. This was Yard X on later maps.
Yards A & B were the main PRR yards south and north of the Wabash River respectively. The Wabash RR had tracks in Yard B.
Yard C was west of Logansport, just east Kenneth, a/k/a Trimer, where the line was built north to Royal Center to replace the 1861 track that overpassed the ERR on the attached map. The climb up to the overpass was too steep. Passenger trains continued to use the old route for a while because it was shorter, but freight was sent west to Kenneth, then north to Chicago.
I made the ERR presentation in Logansport about ten years ago and it was well attended. I’ve been researching these lines for 20+ years and am still amazed that given all of the RR history in Logansport, there are no apparent resident RR historians there. I’ve had exceptionally limited contact with anyone there.