Sixty Years in Thirty (plus one for good luck) Clues

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Across
  1. 4. Secure ivory from back to front, at snail mail address(9)
  2. 5. One bat, bat one (4,4)
  3. 6. Natural in nature (2,5)
  4. 8. I rob ma as gods feast (8)
  5. 9. A hundred more of them would be...gross!(5,4,5)
  6. 10. Tiptoeing defenceman hears Seuss character? (3,7)
  7. 13. Mtl board hypnotist’s words, describing this birthday boy (3,4,9)
  8. 14. Ran motel for kissing, natch!(8)
  9. 17. Finders shared at the hip (10)
  10. 20. Bagel alternative shelf is full (10)
  11. 22. George P. sleeps en francais (6,4)
  12. 23. Oogamete is confused, but ya gotta love him nonetheles(3,2,3)
  13. 24. Uh,oh!Tummy’s doing the tango!(5,5)
  14. 25. Meow! Images Galore! (5,4)
  15. 27. Board game woes (5,1,4,2,5)
  16. 31. denture am sure lasts forever (2,8)
Down
  1. 1. Choose an Inuit toy (6)
  2. 2. Indy tales (4,7)
  3. 3. Nothing to wear? Kudo to us!(5,7)
  4. 7. get all confused on floor covering (7,4)
  5. 11. Personal wishes (4,3,4,3,4,3,4)
  6. 12. Carpenter’s tool in a Broadway show(8)
  7. 15. to pry, dip hay in bath and celebrate! (5,8)
  8. 16. Mean mot from cords’ rows (9)
  9. 18. Peas on a drink break (7)
  10. 19. Smart nun accustom to office work (7,9)
  11. 21. Part meant for lease (9)
  12. 26. Under budge-it? Quite the contrary!(4,4)
  13. 28. Panned penner on Lake Simcoe? (6)
  14. 29. ‘Nuf said upended (3)
  15. 30. Cusp may wanna go back (4,3)