The episode page has already been pulled from the PBS website, but with the help of TPM reader LC and Google we've located the now lost episode of Postcards from Buster in which Buster the Rabbit visited Vermont and met "Emma, David, and James, who live with their two moms."

Another strike against Buster may have been that, as he admits in the segment promo, "Karen [one of the two moms] and my mom [who is presumably also a cartoon rabit] used to work at the same newspaper together."

Anyway, see it while you can. It's sure to become an underground classic like those bootlegs of SpongeBob's 'lost appearances' in Armistead Maupin's Tales of the City that 'the suits' pulled before the final cut.