This story takes the adventure trail of that young soldier-explorer Zebulon Montgomery Pike, who was lost in the mountains of southern Colorado one hundred years ago. Another story in the Trail Blazers Series has told of Captains Lewis and Clark, who explored the northwestern part of the new Louisiana Territory. They, also, were young. Captain Lewis had just turned thirty. But Lieutenant and Captain Zebulon Pike was younger yet. He was only twenty-seven when, while Lewis and Clark were still out, he was sent to lead a handful of men into the unknown Southwest.
The vast Province of Louisiana, bought by the United States from France three years before, for $15,000,000, was thought by the United States to extend, in the north, from the Mississippi River to the Rocky Mountains; in the south it tapered off to the Gulf of Mexico at New Orleans.
The southwestern boundary was uncertain. The United States claimed clear to the lower Rio Grande River, across Texas; Spain, which had owned Louisiana Territory before the United States bought it from France, claimed north even to the Missouri
