Namesakes, Kinda by Fred Piscop

Across 1. HCl and HF 6. Help a checker 9. Noodlehead 14. __ Dame 15. "__ Gang" 16. Grab the tab 17. Best possible 18. Hurler's stat 19. Do a double take, e.g. 20. Two Erics 23. Poseidon's realm 24. Deliberate loss 25. Refueling area 28. Study at the last minute 31. Suppressed, as emotions 35. Sacagawea denomination 36. A dwarf planet 38. Tubular fare 39. Two Eriks 43. Dustin's "Tootsie" costar 44. Boom box sound 45. Model Carol 46. Nag's pad 49. Duke it out, in practice 50. Teachers' org. 51. Depend 53. Dam-building org. 55. Two Erichs 61. Tourney type 62. Flowery necklace 63. "Stompin' at the __" 65. Bright bunch 66. Cigarette package word 67. City near Syracuse, NY 68. Senate spots 69. Neighbor of La. 70. Like a gnat

Down 1. Singer DiFranco 2. Closing passage 3. Tabloid twosome 4. Dull colors 5. Connie of "Hotel" 6. Dutch South African 7. Subtle glow 8. Long piano 9. Try hard 10. Piece of office furniture 11. Make well 12. Mugger's faceful 13. Mel in Cooperstown 21. Dog-__ (well-worn) 22. Quick swim 25. Yeats and Keats 26. Map within a map 27. One more than tri- 29. Burnoose wearer 30. Three squares 32. Atlas was one 33. Of value 34. Michelangelo masterpiece 37. Ginger cookie 40. Hearty hunk of meat 41. Mild maledictions 42. Offers for dinner 47. Subsidiary theorems 48. Street of nightmares 52. Big Three summit site 54. Playing marble 55. On the house 56. Jaffe or Barrett 57. At hand 58. Bogarde of film 59. They try harder 60. It may be picked 61. Gordon Brown, Tony Blair et al.: Abbr. 64. "Whoopee!"

Solution