Railroads and Latinos

Dear colleagues. 

I am starting a community-engaged research project on Latino railroad workers on the Midwest. This is a project that we at the University of Nebraska at Omaha's Office of Latino/Latin American Studies are doing with/for the Union Pacific Railroad Museum. Our objective is to collect between 20 and 25 oral histories with former railroad workers from the Midwest/Great Plains regardless of whether they worked for Union Pacific or not. We have found extraordinarily little bibliography on this topic. Can anyone point us to some resources? 

So far we have only found:

• Garcilazo’s Traqueros: Mexican Railroad Workers in the United States, 1870 to 1930;
• Gamboa’s Bracero Railroaders; and
• Driscoll’s The Tracks North.

 Any other authors who have worked on this topic or near this topic? I posted a similar message on Twitter recently and will cross post in other H-Networks.  Thanks!