EarthWorks Geospatial Catalog

Maine : 30 x 60 minute series (topographic) [cartographic material] / produced by the United States Geological Survey.

Relief shown by contours and spot heights in meters. Each sheet separately titled: 1:100 000-scale metric topographic map of ... Maine. "30 x 60 minute quadrangle showing: contours and elevations in meters; highways, roads, and other manmade structures; water features; woodland areas; geographic names. Includes "Conversion table," "Declination diagram," and index to adjoining maps. Compiled from USGS 1:24 000 and 62 000-scale topographic maps ... Planimetry revised from aerial photographs ... and other source data. Revised information not field checked.
Geological Survey :
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