Resource Type

Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Map of the United States and surrounding areas with time zones marked and labeled in red. Bodies of water are marked, with depth marked by hatchures, as well as state lines and major cities..
Date: January 1, 1948
Creator: Geological Survey (U.S.)
Object Type: Map
System: The UNT Digital Library
Table and Mollier chart for ammonia below -60° F (open access)

Table and Mollier chart for ammonia below -60° F

A report containing a table and Mollier chart for ammonia below -60° F.
Date: November 1, 1948
Creator: Meyers, Cyril H.
Object Type: Report
System: The UNT Digital Library