1. Blockhead
4. "Ol _____ River"
7. Last call?
11. Richie's Mom, to the Fonz
12. Hamster's home
13. Big dos
15. As partial payment
17. Certain aircraft, for short
18. "My mama done ____ me"
19. At one's post
21. New Deal pres.
22. Adaptable truck, for short
23. Keats works
24. "When is a door not a door? When it's ___."
27. Was Arafat's grp.
28. Stockholm's country
30. Old man: Ger.
33. Coaster
36. Skin problem
38. Gulf of ___, off the coast of Yemen
39. Dash lengths
40. British awards
41. Backup strategy
43. Lackluster
45. "Cat on _____ Tin Roof"
46. Balls of yarn
48. Modern-day tech purchases
50. Halftime lead, e.g.
51. Stove or washer: Abbr.
53. Gym teacher's College deg.
56. Check for accuracy
58. Plaza Hotel girl of fiction
60. Churchill's "so few": Abbr.
61. Hitching post
64. Back to front (vulgar slang)
66. Go forth
67. Sch. groups
68. Cobblers' tools
69. The highest string of the lyre
70. One of the 12 tribes of Israel
71. Genetic stuff