THE PLT OF A CESSNA TU206F, N7320Z, STATED THAT HE ADVISED OTHER TRAFFIC OF HIS POSITION & INTENTIONS ON THE UNICOM FREQ AS HE ENTERED A STRAIGHT-IN APCH TO RWY 24. AT ABOUT THE SAME TIME, THE PLT OFA PITTS SPECIAL S-1, N20JK, HAD RETURNED FROM A LOCAL FLT & HAD REMAIND IN THE TRAFFIC PATTERN TO PRACTIVE LANDINGS. THE PLT OF THE CESSNA SAID HIS ACFT WAS EQUIPPED WITH A SPOL MODIFICATION & HE FLEW HIS FINAL APCH AT 55 TO 60 KTS. HE SAID HE SAW THE PITTS STILL ON DOWNWIND WHEN HE WAS ON FINAL APCH. THE PLT OF THE PITTS SAID HE FLEW A STANDARD PATTERN & TURNED ONTO FINAL APCH ABOUT 3/4 MI OUT. HE DID NOT SEE THE CESSNA PRIOR TO THE ACCIDENT. THE ACFT COLLIDED WHILE THEY WERE IN THE LANDIND FLARE/TOUCHDOWN PHASE FOR RWY 24. THE PITTS CONVERGED ON THE CESSNA FROM ABOVE. IT HIT THE RIGHT WING OF THE CESSNA AS THE CESSNA WAS TOUCHING DOWN. THE AIRMAN'S INFORMATION MANUAL RECOMMENDS THAT ACFT ENTER TRAFFIC ON DOWNWIND, ABEAM THE MIDPOINT OF THE RWY.