“Frosty the Snowman,” the beloved animated holiday classic, airs tonight at 8:30 p.m. Eastern on NBC. The show follows the iconic cartoon adaptation of “How the Grinch Stole Christmas.

Thieves have stolen original artwork used in the animated film The Snowman. At least 18 animation cels worth a total of £20,000 were taken from the film's central London production headquarters.

Frosty the Snowman is one of the many holiday classics by Rankin/Bass—the same animation icon behind Rudolph the Red-Nosed Reindeer, The Year Without a Santa Claus, and more. Still, Frosty the ...