Thanks for the split.
[These are not the exact words.]
Some people claimed that Samuel Langhorne Clemmons (Mark Twain), who lived in Elmira on the Erie, was accused of having a hand in starting the craze. Actually, he didn't specifically take credit for this recycled "slow train" joke from at least 20 years earlier:
"I asked the conductor if the Erie would consider constructive suggestions, if politely submitted. He considered a moment, and then said, `For this unusual type of communication, an exception might be made.' Emboldened, I asked if the cowcatcher could possibly be removed from the front of the locomotive and hung on the back of the last coach. `At the unbelievable velocity we are traveling, there is little chance of overtaking a cow, but much more danger of a female bovine overtaking us, climbing onto the rear platform, and entering the isle, to the great consternation of the other females aboard!' "