<div class="description">
<ul><li><b>Scope and content:</b>  Original caption: White pine stand, Sec 23, T32N, R2W. Mondeaux Dist. Site index 60; present growth rate 350 board feet per acre per year. The stand is 15 to 35 years old. 230 crop trees per acre were pruned in winter of 1939.</li></ul></div>
<div class="fn value">
Unknown author<span style="display: none;">Unknown author</span> or not provided</div>
6 April 1939<div style="display: none;">date QS:P571,+1939-04-06T00:00:00Z/11</div>
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>