<p>Caption on image: Castle Rock, Columbia River. 
</p><pre>Postmarked: March 6, 1908. 
</pre>
 Filed in: Oregon--Columbia River--Castle Rock<p class="mw-empty-elt"></p>
<ul><li>Subjects (LCTGM): Rock formations--Oregon; Rivers--Oregon; Steamboats--Oregon--Columbia River; Canoes--Oregon--Columbia River; Sailboats--Oregon--Columbia River; Postcards</li>
<li>Subjects (LCSH): Columbia River; Castle Rock (Or.); Natural monuments--Oregon</li></ul>
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Unknown author<span style="display: none;">Unknown author</span></div>
<a rel="nofollow" class="external text" href="http://content.lib.washington.edu/alaskawcanadaweb/index.html">Alaska, Western Canada and United States Collection</a>