Jerry Beck (born February 9, 1955) is an animation historian, and author.

In addition to becoming iconic within mainstream public consciousness, the majority of Popeye short subjects are highly acclaimed by animation historians and fans.

Tom Sito (born May 19, 1956) is a well-known American animator, animation historian and teacher.

"These are important historical documents, and they're being terribly abused," said Jerry Beck, an animation historian.

David Gerstein (born February 6, 1974) is a comics author and editor as well as an animation historian.

As the 20th century came to a close, the Censored Eleven cartoons became more known to the public as several animation historians popularized their existence.

However, most prominent comics and animation historians support Messmer's claim, as do the veterans of the Sullivan studio.

Michael Barrier (born June 15, 1940) is an American animation historian.

American animation historians have accepted Messmer's claim without question, as he was the principal animator on the Felix series.