Scale 1:500,000. Alternate title: States of New Hampshire and Vermont. "Lambert conformal conic projection. Standard parallels 33⁰ and 45⁰. Relief shown by shading, contours, and spot heights. Available also through the Library of Congress Web site as a raster image. AACR2
Geological Survey (U.S.)
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/78692610/">https://www.loc.gov/item/78692610/</a>