Henry Carl Kiefer began to sell several cover paintings to pulp magazines during the mid-1920s. Throughout the 1930s, he continued to illustrate for the pulps and also illustrate comics on a freelance basis. His works can be found in DC Comics, Fox Features Syndicate, Quality Comics and many others.
- Henry Kiefer's Images as a Penciler
- Henry Kiefer's Images as an Inker
- Henry Kiefer's Images as a Cover Artist