Askersund, Sweden, town map about 1910.
<a href="//commons.wikimedia.org/wiki/Nordisk_familjebok" title="Nordisk familjebok">Nordisk familjebok</a>, band 2, sida 200, <a rel="nofollow" class="external free" href="http://runeberg.org/nfbb/0126.html">http://runeberg.org/nfbb/0126.html</a>