They slip into the San Diego rail yard furtively, preferably beneath the protective cover of darkness, jumping fences, eluding guards and dodging 200-ton locomotives in a perilous dash for the most elusive of prizes, a free ride to the north. Every day thousands of Mexicans and Central Americans cro...

In the latter half of the 19th century, all industries in the United States were undergoing a period of dramatic change. Consequently, the American industrial worker found himself in a fluctuating work environment, affected by the influences of immigration and technological innovation. The United S...