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Once the most navigable of Texas' winding, debris-choked rivers, the Trinity links Dallas to Galveston across the rich farm lands of East Texas. Of 17 landings in Polk County, Smithfield, Drew's Landing, and Swartwout were 3 of the most important. At times, 8 or more steamboats, stern- and side-wheelers could be seen at a busy landing, where stevedores loaded goods as curious citizens hailed the passengers. Although the Trinity played a leading role in Texas commerce, 1850-1900, railroads eventually ended the steamboat era.