![...an outdoor museum
featuring 43 railroad engines, cars...
...an outdoor museum
featuring 43 railroad engines, cars...](https://content2.mcqstudy.com/ss/tbbt-4-6-00:03:07.684.jpeg)
...an outdoor museum
featuring 43 RAILROAD engines, cars...
The Big Bang Theory Season 4, Episode 6
![Well, Sheldon was going on and on
about time zones and railroad schedules,
Well, Sheldon was going on and on
about time zones and railroad schedules,](https://content2.mcqstudy.com/ss/tbbt-9-16-00:11:39.241.jpeg)
Well, Sheldon was going on and on
about time zones and RAILROAD schedules,
The Big Bang Theory Season 9, Episode 16
![In 1944, the Pacific Railroad
built number 6131,
In 1944, the Pacific Railroad
built number 6131,](https://content2.mcqstudy.com/ss/tbbt-7-15-00:10:53.090.jpeg)
In 1944, the Pacific Railroad
built number 6131,
The Big Bang Theory Season 7, Episode 15
![You'd have to drive a railroad spike into
his brain for me to beat him at checkers.
You'd have to drive a railroad spike into
his brain for me to beat him at checkers.](https://content2.mcqstudy.com/ss/tbbt-2-11-00:15:26.841.jpeg)
You'd have to drive a RAILROAD spike into
his brain for me to beat him at checkers.
The Big Bang Theory Season 2, Episode 11
![There are dozens of railroad crossings
you have to blow the whistle for.
There are dozens of railroad crossings
you have to blow the whistle for.](https://content2.mcqstudy.com/ss/tbbt-10-15-00:06:22.174.jpeg)
There are dozens of RAILROAD crossings
you have to blow the whistle for.
The Big Bang Theory Season 10, Episode 15