I don't know a Robert Raymond Klix, but I have married into the Klix family, it is quite an unusual surname, and from what I know most Klix's are related in one shape or another. Have you tried looking in the Northeastern states like NJ, NY etc.? Our original Family name was actually Von Klix while in Germany.
Most of my husband's family is all over NJ, Florida and California. Good Luck in your search if your still looking.