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United States: IV. Central [from Mississippi River to Rocky Mountains]
Map shows cities, counties, and railroads for states along and east of the Rocky Mountains and west of the Mississippi River. Includes "Index to the sectional maps of the United States" on verso. Relief shown by hachures and spot heights. Scale [1:4,870,000].
Date:
[1902..1922]
Creator:
London Geographical Institute
Object Type:
Map
System:
The Portal to Texas History
Selective Call for Telegraph or Telephone Lines
Patent for a device that allows the user to ring a specific telephone or telegraph line without ringing the bells at other lines.
Date:
September 30, 1902
Creator:
Palmer, William, Jr.
Object Type:
Patent
System:
The Portal to Texas History