A favorite cartoon of my youth, I was surprised to discover that it originally aired in prime time for a single season.
“26 Jonny Quest episodes originally aired in primetime during the 1964-65 season.”
There have been a few resurrections of the series, but none have come close in quality to the original classic 26 episodes.
Fan site:
http://www.classicjq.com/
I own and highly recommend the DVD set.
Jonny Quest First Season
Don’t let “First Season” throw you, there was only one season.