This series of five United States Geological Survey State index maps showing Missouri, Kansas, Oklahoma, New Mexico, and Colorado are included with the Kroh Collection to delineate the routes of historic frontier trails. Each State Index Map shows a delineated series of named, topographic quadrangles. Where the historic trail routes through a designated quadrangle, that quadrangle has been labeled with a respective number. It was upon these 7.5-Minutes Series and some 15-Minutes Series quadrangle maps that Mr. Kroh delineated the routing of the historic Santa Fe Trail, segments of the Oregon-California Trail, Kansas City Region Territorial Roads, and the Fort Leavenworth-Fort Scott Military Road. Lee Kroh did not assemble nor use these State Index maps in his mapping efforts, but they were assembled and paired with his collection by the Kansas City Area Historic Trails Association project team to aid researchers in their efforts to study specific locales along the historic routes. The quadrangle maps of the Kroh Collection can be found at these units; 505734, 505735, 505736, 505737.
Kansas Memory
Kansas Historical Society
Kroh Collection. State index maps - Missouri quadrangle index map