Painting by Paul Hartley, I do believe.
Wow, huh? This jaw-dropping billboard design (shown here without text) was created in 1961 to boast about the enticing new things in development at Disneyland for the year ahead: New Orleans Square, the Swiss Family Treehouse, a brand new shooting arcade for Adventureland, the Tahitian Terrace Restaurant (and a still undefined Tiki Cafe that would eventually morph into something called Walt Disney's Enchanted Tiki Room), and over at the Jungle Cruise: new improved animals and scenes such as the African Veldt and the Elephant Bathing Pool.
It's pretty clear that Disneyland was about to become smokin' hot!
Oh, one last little tidbit touted on the sign is the Haunted Mansion. Although construction of the Mansion's stately exterior was completed in 1962, everyone knows the attraction inside opened seven excruciatingly long years later.
Now, take your loved ones by the hand, please, and kindly follow me over to Daveland to view shocking images documenting construction of the Haunted Mansion on November 19, 1962 -- forty-eight years ago to this very day. You'll even spy the fabulous "Coming Soon" billboard in the shot of WED art director Bill Martin visiting the construction site.