This is the first biography for young people (ages 10-15) of the first Catholic to become prominent in the American book publishing trade. His bicentennial will be observed this year. An adventurous man of great enterprise, willing to take risks, and an ardent lover of freedom, he came to Philadelphia from Ireland and immediately began to publish a newspaper and a magazine. He later became a well known publisher. A friend of Benjamin Franklin and of Lafayette, he fervently espoused the cause of the Constitution and throughout his long life fought valiantly in print on the side of liberty and justice. His story is told here with simplicity and interest. Based on authoritative sources.