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Old Oregon Trail.
Map shows major routes through western United States. Includes legend, historic notes, and illustrations. Relief shown pictorially. Scale not given.
Date:
1948
Creator:
Shope, Irvin
System:
The Portal to Texas History
Dallas (Q-5) sectional aeronautical chart.
Map shows geographic visual points and measurements used to guide slow moving aircraft above Dallas, Texas. Includes legend. Relief shown by contours, tints, form lines, and spot heights. No scale indicated.
Date:
1948
Creator:
U.S. Coast and Geodetic Survey
System:
The Portal to Texas History