Now it's part of my childhood memories

I saw this movie in 1969 when i was just a kid. It was half of a double-feature, the other half being The Green Slime. I have not seen either movie since. But i still remember having seen them both, and this kid was not bored at all by them. I remember being wide awake and even not wanting them to end. Of course, those days we didn't have Nintendos or Playstations.