1827 illustration of Castle Hill (Old Sitka, Alaska) by Postels.
<p>Source: Alaska Department of Natural Resources.
</p>
image URL: <a rel="nofollow" class="external free" href="http://www.dnr.state.ak.us/parks/oha/pics/1827picb.jpg">http://www.dnr.state.ak.us/parks/oha/pics/1827picb.jpg</a>
Postels
Alaska Department of Natural Resources