Carleton was principal writer for several major regional banks. Having run marketing for local, regional, and national financial institutions himself, he brought a unique perspective and insight to these assignments as a writer. He has written everything from small in-branch product flyers to complete brand advertising campaigns including integrated collateral, television and radio commercials, and print and outdoor advertising. He also wrote annual reports for a large bank for several years, including the introductory President's letter because, as the CEO said, "You write like I think." He has also written collateral materials, advertising, and white papers for regional accounting firms and law firms. And he has written brochures, advertising, websites, and executive presentations for two insurance clients specializing in the mortgage banking arena.