Keith has served a long list of clients for more than half a century as a freelance artist specializing in Aviation Art. Listed here in alphabetical order are some of these Aviation Trade Associations, Publications, Aerospace Companies, Airlines, Oil Companies, Military Forces and Air Museums.
- Aircraft Owners and Pilot's Association
- Air Force Association
- Air Force Magazine
- Air Force Memorial Foundation
- Airman Magazine
- Atlantic Aviation
- Atlantic Richfield Oil Company
- Aviation Week & Space Technology Magazine
- Bantam Books
- Bendix
- The Boeing Company
- Chandler Evans/Colt Industries
- Curtiss Wright
- Fafnir
- Fairchild Industries
- Flying Magazine
- Garrett Corporation
- General Dynamics
- General Electric
- Grumman Aerospace
- Hamilton Standard
- Ling Temco Vought
- Lockheed Martin
- Many Major Airlines
- Marathon Batteries
- McChord AFB
- McDonnell Douglas
- McGraw Hill
- Mitsubishi Aircraft
- National Air and Space Museum
- National Bank of Fort Sam Houston
- New England Air Museum
- New Jersey Bell
- Norden
- Northrop Corporation
- Piper
- Popular Aviation Magazine
- Popular Mechanics
- Pratt & Whitney
- Republic Aviation
- Rockwell International, Collins Division
- The Royal Saudi Air Force
- Sikorsky
- Smithsonian Institution
- Sperry Gyroscope
- Sperry Phoenix
- Super Sabre Society
- Texaco
- United States Air Force
- United States Coast Guard
- United States Historical Society
- United States Postal Service
- United Technologies
- The Upjohn Pharmaceutical Company
