[1] His works used to be marked with his distinct, signature style of incisive humor through simple and effective portrayal of Texan life.

[2] Knott's most famous cartoon character "Old Man Texas" was a champion for government honesty, low taxes, and property ownership.

[1] Knott's cartoons were reprinted in several publications including The Literary Digest, Review of Reviews, The Wall Street Journal, Los Angeles Times,[1] New York Evening Post, the New York Herald Tribune, the St. Louis Post-Dispatch, and the Philadelphia Public Ledger.

He spent his first four years in Dallas, Texas illustrating harness and saddlery catalogs for White Engraving Company.

Knott started his career with the News on December 1, 1905, where he would perform artistic duties and general illustration.

During Woodrow Wilson's first presidential campaign and World War I, Knott began drawing daily cartoons and attracted national and international attention.