Way History: 199989672

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

description	All municipalities located upon the above-described zone boundary line shall be considered as within United States standard Mountain time zone.
source	https://books.google.com/books?id=WyYXAQAAMAAJ&pg=PA297
source:1	https://historical1-stg.arcgis.com/arcgis/rest/services/USGS_Historical_Topographic_Maps/ImageServer/

21 nodes

You are either using a browser that does not support JavaScript, or you have disabled JavaScript.

OpenHistoricalMap uses JavaScript for its slippy map.

https://openstreetmap.org/copyright	https://openstreetmap.org
Copyright OpenHistoricalMap and contributors, under an open license

Welcome to OpenHistoricalMap!