Wx4 Maps & Timetables Editor Michael Lowe "discovered" this one.

We used to pride ourselves as a nation of immigrants. When it comes to railroading, we immediately conjure up images of Chinese laborers risking life and limb to construct Central Pacific, but the truth was that in our developing rural hinterlands, railroad construction and maintenance crews resembled United Nations missions. The 1916 Chicago & North Western rule book for track workers (below) illustrates the assertion - It is printed in twelve languages! (click on the image for a PDF)