Which preposition to use with sanborn

in Occurrences 4%

Sanborn in "Atlantic," March, 1875, p. 329; also, Mason Report, pp.

for Occurrences 1%

There I met Frank Sanborn for the first time.

on Occurrences 1%

Brown has left an exact statement of his own motive and expectation, in a letter to Sanborn on the following day.

Which preposition to use with  sanborn