Dave, I noticed in the BCDB listings for the first Jetsons cartoon, that the title is spelled "Rosie the Robot." The title is actually "Rosey the Robot." All the newspaper TV listings and trade publications of the era spell the character's name that way. I suspect the other spelling was a result of the inferior 1980s reboot of the show.
Daily Variety of September 25, 1962 listed the episode's main credits as follows:
Producers-Directors: William Hanna and Joseph Barbara.
Associate Producer: Alex Lovy.
Teleplay: Larry Markes.
Animators: Irv Spence, Don Lusk, Grant Simmons, Ray Patterson.
Film Editor: Joe Ruby.
Voices of George O'Hanlon, Penny Singleton, Janet Waldo, Daws Butler, Don Messick, Mel Blanc, Jean Vander Pyl.
There's also a camera listing which I can't read.
It appears part of the cartoon was contracted out to Grantray-Lawrence.
I'm puzzled by the reference to Messick. I don't recall him being in the episode.
Yowp