"In the following story of those years of my life which were passed on the broad tablelands of western Texas, I have endeavored to set down, plainly and truthfully, events as they actually occurred..."

Napoleon Augustus Jennings (1856–1919) was a Texas Ranger and writer, best remembered for his autobiographical account of the career of Leander H. McNelly's Texas Ranger company in the Nueces Strip, A Texas Ranger, published in 1899. In 1874 Jennings moved to Texas, where after some adventures as a cowboy he joined McNelly's Special Force where he served not as a regular member of the company but only as a field clerk.