Aspen Lumber Company Building, built circa 1882.  100 West Cooper Street, Aspen, Pitkin County, Colorado.  <a href="https://en.wikipedia.org/wiki/Historic_American_Buildings_Survey" class="extiw" title="en:Historic American Buildings Survey">Historic American Buildings Survey</a> photo.
US National Park Service
1980
<a rel="nofollow" class="external free" href="http://memory.loc.gov/pnp/habshaer/co/co0100/co0178/photos/021833pv.jpg">http://memory.loc.gov/pnp/habshaer/co/co0100/co0178/photos/021833pv.jpg</a>.  Originally uploaded to the English language Wikipedia by <a href="https://en.wikipedia.org/wiki/User:Tillman" class="extiw" title="en:User:Tillman">Tillman</a> in April 2008 (<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Special:Log&amp;page=File:AspenLumberCo.jpg">file log</a>).