Image: 1970 Washington state highways (primary-secondary)
Size of this PNG preview of this SVG file: 800 × 444 pixels. Other resolution: 320 × 178 pixels.
Original image (SVG file, nominally 1,152 × 640 pixels, file size: 1.45 MB)
Description: This is a map of the state highways in Washington as they existed in 1970, just before the old primary-secondary split was removed. Primary routes are red and secondary routes are purple. Thin orange is just current routes. Email me if you would like a copy of the GIS data I created for the highways.
Title: 1970 Washington state highways (primary-secondary)
Credit: No machine-readable source provided. Own work assumed (based on copyright claims).
Author: No machine-readable author provided. NE2 assumed (based on copyright claims).
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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