2100 pulled heavy freight and coal trains for the Reading until being retired from revenue service in 1956.

2100 was used to pull the RDG's Iron Horse Rambles excursions alongside fellow T-1's Nos.

2100 subsequently went through multiple ownership changes and spent more time in storage or being moved than it did operating under its own power.

It eventually made its way to the Golden Pacific Railroad in Tacoma, Washington to pull tourist trains for one year, before it sat idle in Richland.

Beginning in 1945, the RDG moved thirty of their I-10sa's to their shops in Reading, and with assistance from the Baldwin Locomotive Works, they converted and rebuilt the 2-8-0's into T-1 class 4-8-4 "Northerns" to aid the railroad's growing freight traffic.

2100 was assigned to pull heavy freight and coal trains across the RDG's mainline and some of its branch lines in Pennsylvania and New Jersey.

[2] Beginning in October 1959, the RDG hosted their own steam excursion program, dubbed the "Iron Horse Rambles", and T-1 No.

[4] Since 1960, the RDG had begun to experience financial troubles, and due to rising maintenance costs to operate the T-1's and with their trackage deteriorating, they had to discontinue the Iron Horse Rambles.

[11] The fifty-first and final Rambles train would take place on October 17, 1964, between Philadelphia and Tamaqua.

2101, to Streigel Equipment and Supply, and both locomotives were put into storage at the company's scrapyard in Baltimore.

2100 to owner and CEO of Lionel Trains, Richard Kughn, and he partnered with Rowland and Bill Benson to create the "2100 Corporation".

2100 was held on January 16, 1998, with eight bidders attending the event, including Ohio Central owner Jerry Joe Jacobson, but the winner was Thomas Payne, the chairman of RailLink, Ltd. of Edmonton, Alberta in Canada.

2100 moved under its power to Cleveland, and then Payne had it towed to the Elgin County Railway Museum's (ECRM) former New York Central shop complex in St. Thomas, Ontario for repairs.

2100 received some cosmetic changes, including the addition of three ditch lights and striped running boards, and it was relettered as Ferroequus (Latin for "Iron Horse").

[26] Payne made plans to use the locomotive to pull excursions on RailLink-owned regional and short line railways in Alberta, Ontario, and Quebec.

2100 travelled light over the BNSF mainline from Tacoma to Richland, Washington, and Payne expected to give the locomotive an annual inspection before operating it on the Tri-City and Olympia Railroad.

2100 was left in outdoor storage in Richland, and ownership of the locomotive was transferred to an undisclosed individual.

[28] In April 2015, the American Steam Railroad Preservation Association (ASR) announced that they had signed a long-term loan with the No.

[28][30] They launched their own fundraising campaign, called Fire Up 2100, and they estimated that the restoration would cost $700,000 to complete.

2100 and its tender were loaded onto two separate heavy-duty flatcars, and they were shipped via BNSF, Norfolk Southern, and CSX to Cleveland over a two-month period.

[30][32] ASR Treasurer Forrest Nance would state in a press release "Taking into account the expense of not only the coal but its transport, proper storage, loading, and ash abatement, it became evident that it would be difficult to have any remaining funds after operating at non-steam railroads and museums we are in discussions with.

Additionally, the logistics of storing, refueling, and burning liquid fuel is in-line with what modern railroads and diesel operated tourist lines are accustomed to, thereby greatly &expanding our opportunities and reducing emissions.

2100's firebox conversion to burn oil was fully completed and was expected to be test fired in nearly two months.