B-father's name Ken Collins

I'm looking for a man by the name Kenneth Collins.I was told he may be my biological father.I know he lived in Arkansas near the Oklahoma boarder.Maybe Siloam Spring or Fayetteville while in high school.He was in the graduating class of 1968. He moved to Miami, Oklahoma in 1966 or 67 and went to high school there as well. He was living with an uncle by the name of Don Leonard, owner of a local hotel. (I was conceived during this time) The only other info I have is that he didn't graduate from Miami High School. He possibly had brown eyes.He had a sister and his parents may have been divorced.If anyone went to school in Siloam Springs or Fayetteville who has access to there high school yearbook, PLEASE take a moment to see if he's listed.Thanks,Tracy OH, my birthdate is 12-20-67