No information is found on the early 20th century artist who went by Heinrich Carl, though ample works appear on several websites and blogs. Their style of color woodcut printmaking is reminiscent of Arthur Wesley Dow and Pedro de Lemos, and their subject matter is often in keeping with Arts & Crafts. Their titling is always written in English, though judging by their name one might think they were a German artist, and images range from the Mystic River in New York to penguins on ice floes to classic, oak-filled landscapes.

Works found online suggest a very talented artist or designer who often worked with cheaper papers, perhaps a student or an amateur woodcut enthusiast. It may very be that the name "Heinrich Carl" is a pen name. For now, art sleuths looking for a compilation of works to study can visit the website of The Linosaurus, who continues to keep an eye out for the identity of Heinrich Carl.