OpenHistoricalMap

Added changes to U.S. time zone boundaries from 1919 to 1923

Closed 9 months ago by Minh Nguyen

Tags

created_by	JOSM/1.5 (18969 en)
project	https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Projects/United_States/Time_zone_boundaries
source	https://books.google.com/books?id=uhxBAAAAIAAJ&pg=PA15

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