The Bachman On30 Baldwin models are a close representation for On42 (QGR 1880's) with a regauge and change of some details.
An intitial "kit-bash" for my project (QGR 1920s-40s)...the Baldwins (2-6-0, 4-6-0, 2-8-0,,2 types) were all scrapped in the 1920s.
For the rest, scratch built 4-6-0 and 4-8-0, but with some US imported parts and accessories ( Westinghouse pumps, headlights, etc.)...available in 1:48 from various US suppliers.
Rolling stock ( Carriages and Wagons-- Pass.Cars and Freight Cars) although US inspired, will haveto be scratch-built. Same for Bogies/Trucks.
Track, although same Gauge as "S" standard ( 22.2mm/ .875") needs to be scratchbuilt ( Code 80 and 70) to reflect the 42 and 60 p/yd rail of the period. Sleepers/Ties as well (1.75"x 3/16"x 1/8").
Given the Total "Inch" specs of the period, all work will be done in "scale inches", not in metric...and so be compatible with what US parts I can acquire.
Sprung Buffers and Hook & Screw link couplers will be a must. ( MCB couplers only came in late 1960s, with Diesels).
So, On30 and On3 had better carry on in US, so we "poor cousins" Down Under can continue to model our " Colonial Gauge" railways.
BTW, for a real 2'6" railroad, the original British built Chili-Antofagasta ( Bolivia) Nitrate railroad of the late 1890s ( Regauged Metre in 1950s?) For a mix of British Loco and US car Practice...
Also the Patagonian lines (British built in Argentina) with British and German Locos.
Both good On30 candidates
Doc AV.