O.N. Hilton - 1920's, California

Hello.I have found a card from O.N. Hilton, with a poem inside, written by same, from the 1920's.The poem is entitled "A Morning Revery in California" and it is a Christmas Card.

I would like to find out more about who O.N. Hilton was... if anyone knows, PLEASE HELP!

Thank you!