Man there are so many! Let's put on our thinking caps guys!
Here's my list.....
1. Penn Central
2. Southern (High Hood)
3. Montana Rail Link
4. Burlington Northern
5. Chicago & Northwestern
6. Frisco
7. Chessie System
8. Milwaukee Road (regular scheme)
9. MKT
10. Union Pacific
11. CP Rail
12. Canadian Pacific Heritage
13. Soo Line speed lettering
14. Baltimore & Ohio
15. Illinois Central Gulf
16. Gulf, Mobile & Ohio (?)
17. Wisconsin Central
18. Wisconsin & Southern Variations
19. Dakota, Minnesota & Eastern
20. Iowa, Chicago & Eastern
Your thoughts?