A list of 88 for the 1940s, not even an even hundred.
1. The Maltese Falcon 1941
2. The Lady Eve 1941
3. Never Give a Sucker an Even Break 1941
4. The Wolf Man 1941
5. How Green Was My Valley 1941
6. Sullivan's Travels 1941
7. The Outlaw 1943
8. Citizen Kane 1941
9. Woman of the Year 1942
10. To Be or Not to Be 1942
11. Bambi 1942
12. Casablanca 1942
13. Mrs. Miniver 1942
14. The Magnificent Ambersons 1942
15. The Black Swan 1942
16. Cat People 1942
17. Shadow of a Doubt 1943
18. Obsession 1943
19. For Whom the Bell Tolls 1943
20. The Adventures of Baron Munchausen 1943
21. The Ox-Bow Incident 1943
22. I Walked with a Zombie 1943
23. Heaven Can Wait 1943
24. Le Corbeau 1943
25. Double Indemnity 1944
26. Bathing Beauty 1944
27. The Woman in the Window 1944
28. Arsenic and Old Lace 1944
29. Great Freedom No. 7 1944
30. Gaslight 1944
31. To Have and Have Not 1944
32. Cover Girl 1944
33. The Ladies of the Bois de Boulogne 1945
34. Henry V 1944
35. Laura 1944
36. Ivan the Terrible, Part I 1944
37. Ivan the Terrible, Part II: The Boyars' Plot 1946
38. Meet Me in St. Louis 1944
39. The Punch Bowl 1944
40. Children of Paradise 1945
41. The Lost Weekend 1945
42. The Spiral Staircase 1946
43. Mildred Pierce 1945
44. Under the Bridges 1946
45. Rome, Open City 1945
46. Brief Encounter 1945
47. The Best Years of Our Lives 1946
48. Duel in the Sun 1946
49. The Big Sleep 1946
50. A Night in Casablanca 1946
51. Beauty and the Beast 1946
52. It's a Wonderful Life 1946
53. My Darling Clementine 1946
54. Gilda 1946
55. The Killers 1946
56. Notorious 1946
57. Murderers Among Us 1946
58. The Treasure of the Sierra Madre 1948
59. Monsieur Verdoux 1947
61. The Ghost and Mrs. Muir 1947
62. Body and Soul 1947
63. The Lady from Shanghai 1947
64. Call Northside 777 1948
65. Red River 1948
66. The Red Shoes 1948
67. Bicycle Thieves 1948
68. Abbott and Costello Meet Frankenstein 1948
69. A Foreign Affair 1948
70. La Terra Trema 1948
71. Letter from an Unknown Woman 1948
72. Fort Apache 1948
73. The Big Day 1949
74. White Heat 1949
75. The Third Man 1949
76. On the Town 1949
77. Kind Hearts and Coronets 1949
78. Adam's Rib 1949
79. Orpheus 1950
80. Winchester '73 1950
81. All About Eve 1950
82. Rashomon 1950
83. Cinderella 1950
84. The Young and the Damned 1950
85. The Gunfighter 1950
86. La Ronde 1950
87. Broken Arrow 1950
88. Sunset Boulevard 1950