1. Dixie product
4. Rigg or Ross
9. Ear part
14. Blood typing system
15. Immigrants' island
16. Express
17. Hack off
18. Freak out
20. Noncommittal answer
22. Brand, in a way
23. Colorful bird
26. ER procedure
30. Pristine, so to speak
32. Mexican mate for 72A
34. Popular kids' card game
36. Get the point?
38. Overzealous
39. Ancient Andean
41. Fishhook line
43. Shoestring
44. Lay away
46. Housing projects?
48. PC linkup
49. Joan of Arc's alleged crime
51. Avis offering
53. Hans Brinker's transport
55. Interference
57. Jamaican citrus
59. Further shorten, maybe
61. Freak out
67. What you do with 43A
68. Biblical outcast
69. Action possible with 53A
70. Bank offering, initially
71. Cantankerous
72. Mexican mate for 32A
73. Voting "nay"