Another night of Disney offerings, billed as “Treasures from the Disney Vault,” begins with Hayley Mills in the dual role that made her a minor movie star – as in, a movie star who was a minor – in 1961’s The Parent Trap. She plays long-separated twins who meet, then scheme to reunite their long-divorced single parents. And when this delightful movie concludes at 10:15 a.m. ET, that’s when the really interesting stuff comes out of the vault, starting with such vintage Mickey Mouse cartoons as 1937’s Clock Cleaners and 1936’s Through the Mirror.