Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.

January 1938. Train loaded with cane on a sugar plantation near Ponce, Puerto Rico. View full size. 2.25" nitrate negative by Edwin Rosskam.
I think you mean flat cars. A lot of sugar plantations - at least in Hawaii - had their own narrow gauge railroads to carry the cut cane from the fields to the processing plants.
[The L.O.C. record of the photographer's caption for this image says "flag cars," two words. - Dave]
Today's Top 5