Which preposition to use with barkeepers

in Occurrences 4%

As he ate a free-lunch after a five-cent expenditure that morning, there was something in his air which would have prevented the most obtuse barkeeper in the world from commenting upon the quantity consumed.

of Occurrences 1%

We found there an ex-barkeeper of a certain well-known New-York cockney coffee-house, promoted into a frontiersman, but mindful still of flesh-pots.

with Occurrences 1%

The young man regarded the barkeeper with puzzled eyes.

Which preposition to use with  barkeepers