Santa and Mrs. Claus and possibly Bernard the Elf will be at the World of Little League Museum, 525 U.S. 15 (Montgomery Pike) South Williamsport, from noon to 3 p.m. Sunday, Dec. 10. Guardians are encouraged to bring cameras to take photographs. FREE. Little League Lionel Train Set also on display. The Museum is open from 9 a.m. to 5 p.m.