Peter de Sève has been a bright presence in American Illustration for a number of years. His wonderful cartoon-style illustrations have appeared in Time, Newsweek, Smithsonian, Atlantic Monthly and, in particular, on many covers for The New Yorker. His drawings reveal the influence of comic book art and early Mad magazine artists as well as classic illustrators. He displays a particular delight in his portrayal of animals.
There is a nice interview on the Norman Rockwell Museum site that includes videos of the artist in his studio. The video interviews are brief, but show him sketching. (Note the pencil grip.)