Dee,
There is a transcription of Rocky Fork Cemetery in "Tombstone Records of Boone County Missouri, Mrs. E.E. Evans, 1933,1992" with burials before 1860 but it is not online. I got this information from the Boone County, MO USGenWeb home page.
I live in Boone County and might be able to help you if there is access to the cemetery--many are on private land. What names are you looking for?
Vanette