Available also through the Library of Congress web site as a raster image. 2 copies
Eastern National Park And Monument Association
1960s <div style="display: none;">date QS:P,+1960-00-00T00:00:00Z/8</div>
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/98687185/">https://www.loc.gov/item/98687185/</a>