Historic Stage Routes of San Diego County

This is a publication that explores the history of the San Diego Jackass Mail (1857-61), named as such due to the remoteness of the service route requiring riders and mail both to travel by mule instead of stagecoach. The mail service was part of one of the most significant lines in U.S. postal history. The San Antonio–San Diego Mail Line was the first to provide fast and reliable mail service in the southwest region of the country.