| Date | Grid | Clue | Author | Editor |
|---|---|---|---|---|
| Sun Oct 20, 1991 | 28A | Pine-tar product | Calista Luminati | Maleska |
| Thu Sep 25, 1986 | 39D | Hydrocarbon from resins | Dale O. Burgener | Maleska |
| Sat Jun 16, 1979 | 14D | Pine-tar hydrocarbon | William Lutwiniak | Maleska |
| Sat Jan 1, 1966 | 48D | Crystalline hydrocarbon. | Unknown | Farrar |
| Thu Aug 4, 1960 | 15D | Pine tar derivative. | Unknown | Farrar |
| Sat Sep 20, 1958 | 22D | Pine-tar product. | Jack Luzzatto | Farrar |
| Sun Sep 23, 1951 | 59D | A hydrocarbon. | Israel Gitter | Farrar |