Quote About Steam Locomotives

Hello All -

I am a librarian trying to track down the source of a quote about steam locomotives for a patron. The patron says as a child, his father had a poster with the following quote: "Deep in the heart of every American beats the sound of a steam locomotive." Do you have any idea as to the source for this quote, or even where the poster may have come from? Any information you can provide would be greatly appreciated.

Thank you -

Laura M. Wight
Director of Library Services
Montana State University - Great Falls College of Technology

I'm thinking that the quote was something like "Deep in the heart of every American BOY..." Maybe it was a toy train advert (Lionel?) poster. Have to dig deeper.