India-Bhuta-China trijunction near the <a href="https://en.wikipedia.org/wiki/Dolklam" class="extiw" title="w:Dolklam">Doklam plateau</a> (US <a href="https://en.wikipedia.org/wiki/Army_Map_Service" class="extiw" title="en:Army Map Service">Army Map Service</a>, 1955)
US <a href="https://en.wikipedia.org/wiki/Army_Map_Service" class="extiw" title="w:Army Map Service">Army Map Service</a>
1955
<a rel="nofollow" class="external free" href="http://www.lib.utexas.edu/maps/ams/india/txu-oclc-6614190-ng45-4.jpg">http://www.lib.utexas.edu/maps/ams/india/txu-oclc-6614190-ng45-4.jpg</a>