The "Motor Boys Series" is a collection of children's adventure novels written by H. Irving Hancock and published in the early 20th century. The series follows a group of young boys who share a passion for automobiles and racing. Through their thrilling escapades, they learn valuable lessons about friendship, teamwork, and perseverance. The main characters, including Bob Baker, Joe McGlory, and Reddy, embark on various adventures that often involve solving mysteries and overcoming challenges related to their love for cars. The series emphasizes the excitement of motor sports while promoting positive values for young readers.