Which preposition to use with helicon

of Occurrences 2%

This celebrated gathering of wit and whimsicality, founded by Johnson himself in conjunction with Sir J. Reynolds, was the Helicon of London Letters, and the temple which the greatest talker of his age had built for himself, and in which he took care to be duly worshipped.

with Occurrences 1%

I accordingly came; and as I drew near, I saw a certain person on Helicon with a trumpet, with which he announced and proclaimed the assembly.

Which preposition to use with  helicon