Note that 7-8 PM is the correct broadcast time - while the original ABC press release and some other sources list the broadcast time as 8-9 PM, that is incorrect.
In 1974's It's the Easter Beagle, Charlie Brown, Linus tries to convince the gang that there's no need to decorate their own eggs, because the Easter Beagle will bring them - but given Linus' history with the Great Pumpkin, his friends are skeptical. Meanwhile, Peppermint Patty and Marcie (ignoring Linus' advice) go through a series of mishaps preparing eggs for coloring.
Charlie Brown's All-Stars was the second-ever Peanuts television special, airing in 1966 just six months after the successful broadcast of A Charlie Brown Christmas. In this special, Charlie Brown tries to keep his baseball team together with the lure of getting actual uniforms and playing in a real league, but he faces a tough decision when he learns that the sponsor will only provide them if he takes the girls and Snoopy off the team.