Meet the Man Behind Don Draper’s Creative Genius

Matt was such a stickler for detail, he really wanted somebody on staff who could get the look and sketches that he saw in pictures of the advertising agencies he researched. He was choosing to portray the advertising process at a time when art directors and writers started working together in teams to come up with unifying picture-word concepts."
"Weiner wouldn't allow him to use technology to create the ads if it had not been around at the time in which the season was supposed to occur. "The first season, Matt wouldn’t let me do the comprehensive layout in marker until we showed an ad that someone found in the back of a CA magazine, showing Magic Markers were available in 1963," he said. "If you look at the first ads that I was working on in the show, like the Right Guard ads in episode two, they’re all done in grease pencil. As soon as we found that out, I switched to markers.""
Meet the Man Behind Don Draper’s Creative Genius -- Vulture