Dr. Seuss wrote this best-selling children's book. (http://www.everypicture.com/shop/books/ 17f0833bb6a81d370177057f85f68871/cat-in-the-hat.jpg)

A stamp featuring Dr. Seuss and characters. (http://images.google.com/images? gbv=2&hl=en&safe=active&q=dr.+seuss+cartoon)

As a student of Dartmouth College, he became editor-in-chief of the "Dartmouth Jack-O-Lantern," the school newspaper. He was so passionate about writing that even after being banned from extracurricular activities for violating Prohibition, he rejoined the paper under the pen-name Seuss, also his middle name and his mother’s maiden name.

Now would be a great time to introduce Geisel’s three pen names. Dr. Seuss was the most used, with fifty-one of his best books under that name from 1937 to his death. Theo LeSieg (Geisel spelled backwards) was used on "Come over to My House" and twelve other books, and the pen name Rosetta Stone was only used once. The pronunciation of his first pen name is debatable. He personally pronounced Seuss in the German fashion (rhymes with “voice”), though most readers mistakenly assume it rhymes with “juice.” The “Dr.” is a reference to his father’s wishes that Geisel would earn a doctorate in literature, but instead, Geisel obtained a PhD in literature, so he should have been Seuss, PhD.

Now that we’ve cleared through the murky waters of pen names, middle names, and maiden names, we can get on with Dr. Seuss’s actual career. He began his career by submitting humorous articles and illustrations to various newspapers and making advertisements for an insecticide called Flit, NBC, GE, and Standard Oil. He also animated a short-lived comic strip called "Hejji" and, through his articles, teased Technocracy, an economic and political movement.

Dr. Seuss's best-selling and simplest book. (http://i.treehugger.com/images/2007/10/24/green%20eggs.jpg)

On the way back from Europe, Dr. Seuss was listening to the rhythm of the engines on the ship. This triggered his creative mind to make poetry which originally became his first children’s book, "And to Think That I Saw It on Mulberry Street." This book was rejected by anywhere from twenty to thirty publishers and is based on Dr. Seuss’s opinion that adults are too restrictive of children’s imaginations. Finally, it was accepted by Vanguard Press and published in 1937. He then wrote three more books before World War II. Two of those were written in prose instead of his usual poetic style. At the start of World War II, Geisel made political cartoons to attack racism, communism, the press, Congress, or anything else that he thought was making the Nazis’ job easier. However, in 1942, he chose to be wholly patriotic; in his case, that was making posters and films for the U.S. military, Treasury Department, and general public. Some of his notable films from the war era included "Your Job in Germany," the 1947 Academy Award-winning Best Documentary called "Design for Death," "Private Snafu," and "Gerald McBoing-Boing."