Tomas Madrigal greasing a steam locomotive in the Rock Island roundhouse at Blue Island, Illinois, in April 1943. Madrigal (1915-86) was born in Mexico and came to the U.S. when he was about 17. He worked for Rock Island for about 35 years, retiring in 1975. Blue Island, a suburb south Chicago, was the location of the Chicago, Rock Island & Pacific Railroad's major locomotive shop in the Chicago area, and was especially busy during World War II when this photograph was taken. Madrigal's son said 85 percent of the roundhouse workers were born in Mexico. The roundhouse later serviced diesel locomotives. In Library of Congress records, Tomas Madrigal's first name is given as Thomas.