Way History: 199981748

Added changes to U.S. time zone boundaries from 1950 to 1967

source	https://books.google.com/books?id=I_95C_rqmewC&pg=PA282
source:1	https://historical1-stg.arcgis.com/arcgis/rest/services/USGS_Historical_Topographic_Maps/ImageServer/

2 nodes

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