The bulk of freight cars on a typical Chessie mixed freight train are from other roads. So, to have a prototypical Chessie train you need some cars from other roads. Below is a list of some of the other roads freight cars. I haven't listed all of the ones I own, since this really is a Chessie site.
Enjoy....
Amtrak
Capitol
Limited
Atchison Topeka & Santa Fe
352336at&sf
Boxcar
Carbon Black Covered Hoppers
Carbon Black
Chicago and Eastern Illinois
706367cei
Covered Hopper
Chicago Northwestern
170017
& 170068cnw Covered Hoppers
178600cnw,
2
other CNW Covered Hoppers
Conrail
18832cr
Caboose
Erie-Lacawanna
56409el
Boxcar
Fruit Growers Express
11432fgex
Reefer
Grand Trunk Western
516307gtw
Boxcar
307001
& 307002gtw Coil Cars
Missouri Pacific
721205mp Covered
Hopper
Monon
52023mon
Covered Hopper
Norfolk & Western
361513n&w
Boxcar
42120n&w
Boxcar
173247n&w Covered Hopper
Rail Box
34682rbox
Boxcar
Richmond Fredricksburg & Potomoac
2068rf&p
Boxcar
Southern
72382sou
Tank Cars (Multiple Owners)
Tank Cars
Trailer Train
ATTX 75 ft
Flat Car (TOFC)
TTX 85 ft
Flat Car (TOFC)
Vesuvius Crucible Boxcars (VCBX)
VCBX Box Cars
Westvaco Pulpwood Flat Cars (WVCX)
WVCX Pulpwood Flat Cars
Other Roads Coil Hoods
Atchison
Topeka
& Santa Fe, New York Central, Penn RR, Union Pacific, and
Chicago Northwestern
Other Roads Semi Trailers
APL, BN, MILW, L&N, PC, etc.