Areas Occupied by the Newark System,
A map showing the local development of Triassic rock in the older Appalachians. The arrows indicate the direction in which the strata dip.

Atlantic Coast Tides, 1885
Tide heights at various points along the Atlantic seaboard.

Atlantic States, 1911
This map is an early 20th century illustration of the States considered the Atlantic States.

Central Appalachians,
A relief map of the central part of the Appalachian System.

Chesapeake Bay,
A map showing Chesapeake Bay and Delaware Bay and the principal bays tributary to them.

Cumberland Plateau,
A map of the Cumberland Plateau. On the right is the summit of the plateau; on the left is the surface of the Highland River; between is a belt of rugged country which marks the descent from the higher to the lower level.

Detroit, Cleveland, Cincinnati, and Pittsburg, 1910
A map showing the location of Detroit, Cleveland, Cincinnati, and Pittsburg, and their relation to the trade routes of the Central and Middle Atlantic States.

Development of Three Peneplains in the Chattanooga District,
A map showing the relative development and preservation of three peneplains in the southern half of the Chattanooga district. Darkest areas, base-leveled areas of the late Tertiary or Coosa peneplain; lightest shade, early Tertiary or Highland Rim peneplain; intermediate shade, remnants of the Cretaceous or Cumberland peneplain. Residuals above the Cumberland peneplain are shown in slightly darker shade.

Drainage Map of the Appalachian Region,
A drainage map of the Appalachian region.

Kentucky and Tennessee, 1920
The states of Kentucky and Tennessee.