Tommy Dorsy recorded this in 1948 with an intro and outro that used a different melody and different changes, but these will stand on their own. May not be quite word for word, but these words fit (The third verse is done in a faux cockney accent):

Down by the station early in the morning
See the little puffer bellies all in a row
See the station master pull the little handle
Puff puff toot toot off we go

Down by the station early in the morning
Grab a cup of coffee while I'm waitin' for the train
Chage another quarter, gotta pay the porter
Chug chug poop poop looks like rain

Down by the station shinin' up me brass plates
All the gandy dancers on the main line
See the diamond cracker warmin' up the big jack
Chug chug poop poop off we go.

First verse done as a round.