After the war McKim stopped acting and became an artist, starting his career at the art department of Fox Studios before moving to the Walt Disney Company where he'd stay for the next 32 years until his retirement in 1987, 12 of which he would work closely with Walt Disney.
[1] McKim began his career at WED Enterprises in 1954 as an illustrator six months prior to the opening of Disneyland.
One of his earliest illustrations being of The Golden Horseshoe in Frontierland as well as storyboards for various films and television shows such as, Nikki, Wild Dog of the North, Big Red, and Zorro.
Later on he would contribute some illustrations for Great Moments with Mr. Lincoln, Walt Disney's Carousel of Progress, Pirates of the Caribbean and the Haunted Mansion.
The window, which can be found above the Main Street Photo Supply Co. reads: Cartography Masterworks – Sam McKim – Map Maker of the Kingdom – There's Magic in the Details.