Curated OER
Educational Technology Clearinghouse: Maps Etc: Standard Time Belts, 1901
A map from 1901 of the United States showing the time zones as they were then established.
Curated OER
Educational Technology Clearinghouse: Maps Etc: Standard Time Belts, 1903
A map from 1903 of the United States showing the time zones as they were then established. "The heavy dotted line shows the arbitrary divisions of time in the United States. The plus and minus marks on either side of the meridian lines...