Map showing proposed system of levees for the protection of overflowed lands accompanying engineers report of 1912 : East Fork Trinity River, Rockwall, Collin and Dallas counties, Rockwall sheet.

Map shows buildings, structures, roads, and railroads along the watershed of the Trinity River through portions of Dallas, Collin, and Rockwall Counties; existing and proposed levees, flood lines. Includes legend. Relief shown by contours and spot heights. Scale [1:24,000].
Date: 1912
Creator: Geological Survey (U.S.)
System: The Portal to Texas History

[Map of electric railway lines in North Central Texas]

Map shows routes and cities served for the Texas Interurban Railway, Texas Electric Railway, Northern Texas Traction Company, and the Tarrant County Traction Company lines in North Central Texas. Scale not given.
Date: [1917..1931]
Creator: unknown
System: The Portal to Texas History