500 Festival Open Invitation Winners Winners

| Year_ | Date_ | Winner | Score | To_par | Winner_s_share_ |
|---|---|---|---|---|---|
| 1968 | Jun 6–9 | Billy Casper | 70-71-69-70=280 | −8 | 20000 |
| 1967 | Jul 6–9 | Frank Beard | 70-71-69-69=279 | −9 | 20000 |
| 1966 | Jul 28–31 | Billy Casper | 69-70-68-70=277 | −11 | 16400 |
| 1965 | May 24–27 | Bruce Crampton | 71-70-67-71=279 | −5 | 15200 |
| 1964 | May 27–31 | Gary Player | 70-66-70-67=273 | −11 | 12000 |
| 1963 | May 31 – Jun 3 | Dow Finsterwald | 68-68-64-68=268 | −16 | 10000 |
| 1962 | May 24–27 | Billy Casper | 66-67-67-64=264 | −18 | 9000 |
| 1961 | May 25–28 | Doug Ford | 69-69-67-68=273 | −12 | 9000 |
| 1960 | May 26–29 | Doug Ford | 66-68-68-68=270 | −14 | 9000 |