Green’s Dictionary of Slang

(US tramp) Saint Joseph, Missouri.

1861		R.F. Burton City of the Saints 6: Saint Joseph (Mo.), better known by the somewhat irreverend abbreviation of St. Jo.
1872		‘Mark Twain’ Roughing It 21: We were six days going from Saint Louis to ‘St. Jo.’.
1885		Atchison (KS) Daily Globe 28 July 4/6: Sam Jones, the religious tramp [...] has gone south to get fresh southern slang for his St. Joe camp meeting.
1898		Rock Is. Argus (IL) 16 June 3/2: Ebright says that he severed his connection [...] in the interest of baseball in St Joe.
1908		K. McGaffey Sorrows of a Show Girl Ch. v: Some unsophisticated young ingenue that never had been further [...] than an occasional excursion across the lake to St. Joe.
1915		R. Lardner ‘Alibi Ike’ in Coll. Short Stories (1941) 50: The old lady’s out to St. Joe [...] tryin’ her hardest to fix things up.
1921		P. & T. Casey Gay-cat 62: Me, a yegg with science, lost my nerve? What about St. Joe and Chi, Slim?
1927		R. Lardner ‘Hurry Kane’ in Coll. Short Stories (1941) 105: I hope I ain’t keeping you from a date with that gal from St. Joe.
1953		J. Thompson Savage Night (1991) 107: You remember that kid in the jungle at St. Joe, the color of the weeds he was lying in.
2005		G. Pelecanos Drama City 139: Aris was a sales rep for a major appliance manufacturer out ‘Saint Joe’s.’.