It may be difficult to find information on anime that’s really old, i.e. pre-1970 or pre – 1945, depending on your definition, so I’m starting a list.
The White Snake Enchantress (M) 1959
The Adventures of Little Samurai (Magic Boy) 1959
The Enchanted Monkey or Alkazam the Great 1960
The Orphan Brother 1961
The Life of Buddha 1961
Adventures of Sinbad 1962
A Story on a Street Corner 1962
Sparrow in a Gourd 1962
Touring the World 1962
Little Prince and the Eight headed Dragon 1963
Doggie March 1964
Gulliver’s Space travels 1965
Taro, the Son of Dragon 1966
Pictures at an Exhibition 1966
Jungle Emperor 1966
The Kurohime Story 1966
Cyborg 009 1966
Cyborg 009 – the Underground Duel 1967
Jack and the Witch 1967
The Madcap Island 1967
Fables from Hans Christian Andersen 1968
Little Norse Prince Valiant 1968
The Fox with Nine Tails 1968
The Mighty Taro 1968
Puss’n Boots 1969
Flying Phantom Ship 1969
A Thousand and One Nights 1969
Hanako, the Elephant 1969
Cleopatra, Queen of Sex 1970
Kyojin no Hoshi 1969
Kyojin no Hoshi, Dairigu Boru 1970
Kyojin no Hoshi, Shumeki no Taiketsu 1970
Treasure Island 1971
The Fantastic World of Ukiyoe 1969
Attack no 1 (movies) 1970
Nobody’s Boy 1970
30,000 Miles Under the Sea 1971
Ali Baba and the Forty Thieves 1971
Belladonna 1974
Jack and the Beanstalk 1974