Old military map of France, Hautes-Alpes department. Briançon S.W. sheet, 1/40,000.
<a href="https://www.wikidata.org/wiki/Q1270687" class="extiw" title="d:Q1270687"><span title="France's military archive and cartography department from 1688 until 1940">Dépôt de la Guerre <small>(Q1270687)</small></span></a>
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