Arthur Laubach (Kristovich & Laubach), h 504 E 3d.
Laubach is the householder at 504 E 3rd but Martin Kristovich listing says this is their restaurant address!
Restaurant listing (p2244) is:
Kristovich T M, 505 Central
Kristovich & Lanbach, 504 E 3d (This is Martin according to residential listing. Also a spelling error for Laubach [Laubach seems more likely and occurs in more places])
So Laubach is co-proprietor and lives at the restaurant. Martin Kristovich lives elsewhere