I was watching some vhs tapes I recorded of Boomerang off Cartoon Network. They showed a few cartoons with DC heroes. No opening/closing credits, just the toons. One had Hawkman in space. Another had Aquaman and Aqualad. Looked to be from the mid 60s, 66-67? Is this particular series on dvd and what is the title of the dvd?

A 2-second search on IMDB will show you what you're looking for.

Aquaman had his own series, which was recently released in its entirety on DVD.

Hawkman was part of the set which also included Flash, Green Lantern, Atom, the Teen Titans, and the Justice League. I think there are 3 shorts of each, not available on DVD.