At Mount Rushmore by Fred Piscop

Across 1. Reads quickly 6. Battery fluid 10. Condo ad abbr. 13. Lecturers' spots 14. Go ballistic 15. Part of a fight card 16. Bart's grandfather at Mount Rushmore? 18. Old science mag 19. Big name in chocolate 20. Half of hexa- 21. Knitter's buy 22. Years ago 24. Yule quaff 26. New York's __ Park 30. Falco of "The Sopranos" 31. Mayberry lad 32. Muffin choice 34. "I pass" 38. Remain unsettled 39. Give the slip to 41. Artful dodge 42. Run-down 44. Blissful setting 45. Got taller 46. Orbital period 48. Asserts without proof 50. Place to get oysters or clams 53. Con __ (vigorously) 54. Suffix with million 55. Rhoda's TV mom 57. Rock layers 62. Inventor's spark 63. Clockmaker at Mt. Rushmore? 65. Go like heck 66. Nobelist Wiesel 67. Smart __ (wisenheimer) 68. "Shame!" syllable 69. "Just Do It" sportswear company 70. Takes five

Down 1. Reach across 2. Hoopster Bryant 3. March 15, e.g. 4. Aerosol output 5. Popeye, for one 6. Dadaist Jean 7. Hindu social class 8. Inventor Sikorsky 9. Said no to 10. Toga sporter 11. H.H. __ (Saki's real name) 12. Scorpion attack 15. Culture Club singer at Mount Rushmore? 17. Put at risk 23. Four-leaf find 25. Tonic's partner 26. Beat walkers 27. Olympian's sword 28. Mudville __ (Casey's team) 29. Popular toy at Mount Rushmore? 30. Make beloved 33. "Far out!" 35. Town, informally 36. "Understood!" 37. Moistens, as a lawn 40. Join the military 43. Pro vote 47. Gotten up 49. Mandrake's assistant 50. "Nick of Time" singer Bonnie 51. Hospital helpers 52. Inflict, as havoc 53. Hand-dyed fabric 56. Grocery store section 58. Part to play 59. Iowa State city 60. Diplomat's forte 61. Makes inquiries 64. Bray syllable Copyright © Fred Piscop