| Additive sold at AutoZone | 25 |
| 60's-70's hallucinogen | 30 |
| 500 letters | 11 |
| 500 initials | 12 |
| 1999 Clorox acquisition | 23 |
| 1985 Union Carbide acquisition | 30 |
| "Wicked Garden" rockers (Abbr.) | 41 |
| "The Racer's Edge" Indy sponsor | 45 |
| "Purple" band (abbr.) | 31 |
| "Plush" rockers (Abbr.) | 33 |
| "Plush" band, initally | 32 |
| "Interstate Love Song" band, for short | 48 |
| "Interstate Love Song" band, briefly | 46 |
| ___ 500, annual race in Ridgeway, Va. | 37 |
| March honoree, informally | 25 |
| Patron of Eucharistic Congresses | 32 |
| Mar. 17th honoree | 17 |
| Mar. honoree | 12 |
| March 17 honoree, for short | 27 |
| Mar. 17 honoree | 15 |
| Parade honoree, for short | 25 |
| March honoree, briefly | 22 |
| March 17 honoree, briefly | 25 |
| Mar. parade honoree | 19 |
| Ireland's patron, for short | 31 |
| Parade honoree, familiarly | 26 |
| March man, for short | 20 |
| Annual parade honoree, for short | 32 |
| Annual parade honoree, briefly | 30 |
| Patron of Ireland, briefly | 26 |
| March VIP, briefly | 18 |
| March honoree, in short | 23 |
| March honoree, familiarly | 25 |
| March honoree | 13 |
| March figure, for short | 23 |
| March figure, familiarly | 24 |
| March 17 honoree | 16 |
| Irish hero, briefly | 19 |
| Green party V.I.P.? | 19 |
| Winter parade honoree, for short | 32 |
| VIP of a March march | 20 |
| Time-honored Irish cleric, for short | 36 |
| Patron of puking outside Irish pubs before noon, casually | 57 |
| Patron of Ireland, familiarly | 29 |
| Patron of binge drinking, briefly? | 34 |
| Patron figure of getting hammered at 9:00 a.m., for short | 57 |
| Parade VIP | 10 |
| Parade honoree, in brief | 24 |
| Parade honoree, briefly | 23 |
| Parade figure, informally | 25 |
| One invoked against snakes, for short | 37 |
| Name venerated in Dublin, familiarly | 36 |
| Mid-March honoree | 17 |
| March V.I.P. | 12 |
| March march VIP | 15 |
| March honoree (with an aptly numbered clue) | 43 |
| March honoree for short | 24 |
| March 17th V.I.P. | 17 |
| Mar. VIP | 8 |
| Mar. parade VIP | 15 |
| Mar. parade celeb | 17 |
| Mar. 17th VIP | 13 |
| Mar. 17 man | 11 |
| Mar. 17 figure | 14 |
| Man celebrated on Mar. 17 | 25 |
| Irish patron in brief | 22 |
| Irish hero, for short | 21 |
| Ireland patron, for short | 25 |
| Ireland icon, familiarly | 24 |
| Honoree of Mar. parades | 23 |
| Honoree of a March march, for short | 35 |
| Honoree of a March march | 24 |
| Honoree near the end of winter, briefly | 39 |
| Hist. figure with a holiday named after him | 43 |
| He rid Ire. of snakes, as the legend goes | 41 |
| Green party VIP? | 16 |
| Green party VIP | 15 |
| Green land patron, for short | 28 |
| Green dresser's honoree, briefly | 36 |
| Apostle of Ire. | 15 |
| Annual winter honoree, briefly | 30 |
| Annual parade honoree, informally | 33 |
| Annual parade celeb | 19 |
| 3/17 honoree, for short | 23 |
| Timely subject of five mix-ups in this puzzle | 45 |
| Patron of Ireland | 17 |
| March figure ... or, when split into three parts, a title for this puzzle | 73 |
| March figure | 12 |
| March 17th honoree | 18 |
| 3/17 honoree | 12 |
| Occasion pertinent to this puzzle | 33 |
| March 17 | 8 |
| Big Apple cathedral, familiarly | 31 |
| Parade occasion, for short | 26 |
| NYC cathedral, familiarly | 25 |
| New York cathedral, familiarly | 30 |
| March celebration, informally | 29 |
| March 17, familiarly | 20 |
| March 17 celebration, for short | 31 |
| Fifth Ave. cathedral | 20 |