THE ALPS—MONT BLANC AND THE MER DE GLACE.
<bdi><a href="https://www.wikidata.org/wiki/Q63490109" class="extiw" title="d:Q63490109"><span title="American photographer">Paul Thompson</span></a>
</bdi>
2005-05-15
300 ppi scan of <a href="//commons.wikimedia.org/wiki/Collier%27s_New_Encyclopedia,_Volume_1" title="Collier's New Encyclopedia, Volume 1">Collier's New Encyclopedia, Volume 1</a> (1921), opposite page 154, panel A.