Bud Collyer and Joan Alexander, who had provided the voices for Superman/Clark Kent and Lois Lane in the theatrical shorts and the radio serial, returned to the roles for a third time. Although Alexander would only stick around for the first season, replaced by Julie Bennett in later episodes.
During it's first season, The New Adventures of Superman ran thirty minutes and presented two Superman cartoons with a Superboy cartoon in between.
In season two it became The Superman/Aquaman Hour of Adventure. Episodes of this season included a Superman story and an Aquaman story and rotated in cartoons featuring The Flash and Kid Flash, the Green Lantern, Hawkman, The Atom, the Justice League of America, the Teen Titans (Speedy, Kid Flash, Wonder Girl and Aqualad), and Superboy.
The third season beget The Batman/Superman Hour, featuring new two-part Superman segments alongside new Superboy shorts and the adventures of Batman, Robin and Batgirl.
The fourth season saw a return of The New Adventures of Superman, following the same 30-minute format of the first season, but using only repeats from the previous three seasons, with no new episodes produced.
Here are the opening credits to The New Adventures of Superman:
And here's an episode from the first season:
The New Adventures of Superman @ Wikipedia
The New Adventures of Superman @ Superman Homepage
The Superman/Aquaman Hour of Adventure @ Wikipedia
The Batman/Superman Hour @ Wikipedia
Available @ Amazon:
The New Adventures of Superman
The Adventures of Aquaman:
The Complete Collection
DC Super Heroes:
The Filmation Adventures