The first edition of Purity in Print documented book censorship in America from the 1870s to the 1930s, embedding it within the larger social and cultural history of the time. In this second edition, Boyer adds two new chapters carrying his history forward to the beginning of the twenty-first century.

The fifth and final volume in the Colonels in Blue series, this book covers Civil War Union colonels who commanded regiments of the U.S. Colored Troops, the U.S. Regular Army, the U.S. Marine Corps and the U.S. Sharpshooters. Colonels who served as staff officers or with special units, such as the U.S. Veteran Volunteer Infantry, the U.S. Volunteer Infantry, the Veteran Reserve Corps and various organizations previously undocumented, are also included. Brief biographical sketches cover each officer's Civil War service, followed by pertinent details of their lives. Photographs are provided for most, many published for the first time. Rosters of the colonels in each category include those promoted to higher ranks whose lives are documented in other works.

Of game protection by States. pp. 13.