This is a biographical dictionary of the 325 men who played in the National Association between 1871 and 1875, with their playing record, together with what we know of their other baseball experience and their lives beyond baseball. The book also contains a dictionary of the 25 clubs who participated in the league, showing their history, their management, their uniforms and logos, their home grounds, and their performance in the league. About 150 player photographs are included and each club entry has two or three supporting images (18 are historical maps).

In 1916, over 500 men played in a major league game. Many of those players' names are inseparable from baseball - 39 are members of the Hall of Fame - while others have only one line in the record books. Some enjoyed highly productive careers after leaving the game; others lacked the temperament, skills or opportunities to find success after baseball. This book is the first to focus on a representative group of major leaguers, the Class of 1916, in seeking answers to the questions Who was the average major leaguer in the late deadball era? What was his background? and What became of him when his playing days ended? Introductory chapters offer background information on the era and discuss the 1916 season; provide information on the players' ethnic and geographic origins, ages, and average physical sizes; chart player performance; and summarize post-playing careers and mortality statistics for the group. The main body of the work, a biographical dictionary, is arranged alphabetically, and each entry includes career and biographical information, statistics, post-baseball accomplishments and death. Many rare photographs accompany the text.

This work presents biographical and career sketches of each of the 637 participants in the 1884 Major League Baseball season. It also includes more than 100 photographs and 110 charts of the players' performances on National Association, National League, American Association, Union Association, Players League and American League clubs, and one age chart and one mortality chart.