Map of <a href="https://en.wikipedia.org/wiki/en:Backergunge_District" class="extiw" title="w:en:Backergunge District">Bakarganj</a> (Backergunge) district, 1876. By <a href="https://en.wikipedia.org/wiki/en:Ernst_Georg_Ravenstein" class="extiw" title="w:en:Ernst Georg Ravenstein">Ernst Georg Ravenstein</a> in  <i>The district of Bákarganj; its history and statistics</i> by Henry Beveridge. 
Note: Internet Archive has a higher quality image in jp2 format that can't currently be uploaded to Commons.
E.G. Ravenstein
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