A map from 1906 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers.

A map from 1909 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers.

A map from 1919 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers.

A map from 1922 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers.

A map from 1919 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers.

A map from 1920 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers.

A map from 1920 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers.

A map from 1920 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers.

A map from 1902 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers. An inset map details St. Louis.

A map from 1892 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers. An inset map details St. Louis.

A map from 1920 of Missouri showing the capital of Jefferson City, counties and county seats, major cities and towns, railroads, and rivers. A grid reference in the margins of the map lists counties, principal cities, and towns of Missouri.

A map from 1904 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers. An inset map details St. Louis. "Missouri - Organized as a Territory in 1812; admitted to the statehood in 1821. Its lead...

A map from 1902 of Montana showing the capital of Helena, major cities and towns, Indian reservation boundaries, railroads, rivers, and mountains.

A map from 1906 of Montana showing the capital of Helena, major cities and towns, Indian reservations, railroads, rivers, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are shown.

A map from 1922 of Montana showing the capital of Helena, major cities and towns, Indian reservations, railroads, rivers, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are shown.

A map from 1922 of Montana showing the capital of Helena, major cities and towns, Indian reservations, railroads, rivers, lakes, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are shown.

A map from 1909 of Montana showing the capital of Helena, major cities and towns, Indian reservations, railroads, rivers, lakes, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are shown.

A map from 1892 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, railroads, rivers, and mountains. An inset map details Yellowstone National Park, primarily in Wyoming.

A map from 1919 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, railroads, rivers, and mountains. An inset map details Yellowstone National Park, primarily in Wyoming.

A map from 1920 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, railroads, rivers, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are...

A map from 1920 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, military reservations, railroads, rivers, and mountains. The boundaries of Yellowstone National Park,...

A map from 1914 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, military reservations, railroads, rivers, and mountains. An inset map details Yellowstone National Park,...

A map from 1920 of Montana showing the capital of Helena, counties and county seats, major cities and towns, Indian reservations, military reservations, railroads, rivers, and mountains. The boundaries of Yellowstone National Park,...

A map from 1904 of Montana showing the capital of Helena, major cities and towns, railroads, rivers, and mountains. The boundaries of Yellowstone National Park, primarily in Wyoming, are shown. "Montana was organized as a Territory in...