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Compressor.
Patent for a refrigerating machine compressor, which compresses more gas, cools the compressor with the incoming gas, and uses excess heat to dry the gas coming in.
Date:
April 19, 1910
Creator:
Mayhew, John Daugherty
Object Type:
Patent
System:
The Portal to Texas History
Trammel's Trace: The First Road to Texas from the North
Map showing "Trammel's Trace," the first road from the north (present-day Arkansas) into Texas, used around 1800. It includes notations for abandoned settlements, modern cities, and Caddo villages documented from 1800 to 1840, as well as other historic roads used at the time of Trammel's Trace.
Date:
2015
Creator:
Pinkerton, Gary
Object Type:
Map
System:
The Portal to Texas History
[News Script: Travelers warning]
Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about a travelers warning being put out due to weather conditions.
Date:
1971-03-02T24:00:00
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Script
System:
The UNT Digital Library
Bulletin of the Texas Archeological Society, Volume 40, 1969
Annual journal of the Texas Archeological Society documenting research and findings of members as well as activities of the organization.
Date:
1969
Creator:
Texas Archeological Society
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History