My DS #2 has a love affair with trains. It was easy to get him to take his birthday pictures when we told him he could have one picture with a train.

Paper is Rusty Pickle

The jounraling is his own words:

I Fink Trains are the best things in the world. They go on train tracks.
You can ride in a train.
Santa Clause fills a giant train up with all the toys for Christmas.
I like the Polar Express and Thomas and all of my trains.
They make me happy and they go CHOO CHOO