Just for fun, I spent about 30 minutes on line tonight trying to find out which film was officially co-billed with "First Man into Space", but there doesn't seem to be any one movie which was paired with it.

After doing this, I looked at the movies which were release in 1959, and I finally I decided that "Have Rocket, Will Travel", starring the 3 Stooges, was probably the 2nd feature. I remember seeing this movie when I was kid. Obviously it didn't impress me as much as "First Man into Space", and that's why I didn't remember the experience very well.