Egypt Ottoman border 1906, as depicted in 1907
<bdi><a href="https://www.wikidata.org/wiki/Q96084085" class="extiw" title="d:Q96084085"><span title="engineer, astronomer and military officer">Bertram Francis Eardley Keeling</span></a>
</bdi>
1907
<a rel="nofollow" class="external text" href="https://archive.org/stream/areportondelimi00craigoog#page/n7/mode/1upA">Report on the Delimitation of the Turco-Egyptian Boundary Between the Vilayet of the Hejaz and the Peninsula of Sinai, (June-September, 1906)</a>