...according to some archive articles published in the OKLAHOMAN:

04/16/1918
Noble F. Hilsmeyer, passed his exam & earned his license for a Registered Pharmacist & lists his home as Weleetka, OK.

05/12/1918
Noble Hilsmeyer graduated from the University of Oklahoma with a Pharmaceutical Degree; home listed as Weleetka, OK.

05/20/1920
Dr. Hilsmeyer sued a medical partner at the Baltimore Bldg, of embezzeling Liberty Bonds from him, according to court report. (not for sure if this is same HILSMEYER, as yours).

09/18/1925
L.B. HILSMEYER is the leader of the Psychic Research Society, located at the Baltimore Bldg.

11/13/1935
Ruby WOOD Hilsmeyer was a sculpturists, had one of her pieces displayed at the State Historical Bldg during the month of November 1935, and it also shows one of her sculptures in the article.

...since the one articles mention Weleetka (Okfuskee County), maybe there will be more family in that area. I hope you can use this info. Good luck...

:-))
Norman, OK