5.5 in 1867 in Wamego, KS? That would have been Dorothy landing on the Wicked Witch of the East. Wamego is the home of the Wizard of Oz museum. (and also of several of my cousins.)
A bit before Frank Oz I think!
There were Army posts at Ft. Riley and Leavenworth that would probably provide a good record of the quake.
My wife has a friend in Wamego.