State departmental map.

Map shows major highways, cities, towns, counties, lakes, rivers, and national parks. Insets: "Beaumont Area," "Dallas - Fort Worth Area," "Greenville - Paris Area," "Houston Area," "Lower Rio Grande Valley Area," "San Antonio Area," and "Tyler - Mount Pleasant Area." Scale: [ca. 1:704,000 and 1:1,408,000].
Date: January 1, 1991
Creator: Texas. Transportation Planning Division.
System: The Portal to Texas History

Status of freeway and expressway system: Houston-Galveston Region, January 1, 1991.

Map shows existing major roads and highways for the Houston and Galveston, Texas areas. Roads projected for construction are in color. Includes legend. Scale not given.
Date: 1991
Creator: Houston-Galveston Area Council
System: The Portal to Texas History