Way History: 199979950

Added changes to U.S. time zone boundaries from 1967 to 1970

source	https://babel.hathitrust.org/cgi/pt?id=uc1.b2911119&seq=270
source:1	https://historical1-stg.arcgis.com/arcgis/rest/services/USGS_Historical_Topographic_Maps/ImageServer/
source:2	https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/tigerWMS_Current/MapServer/

62 nodes

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