The mark of "Zorro"

This was a morning train, according to an email, so this foot rider must have been on the first run of the day and was long gone by the time G.J. got on. But there's more ...

"It appears that a Milton Line passenger had quite a snacking feast, judging from all the crumbs that were left behind.

The bottom right also shows evidence of a dirty foot rider too!

Everyone made an effort to avoid this seat until the train arrived at Cooksville. With it being the last seat, a lady bravely brushed off the crumbs with her hand and sat down.

Some people and their children..."

Indeed.