Construction of the first Hungarian underground line, 1896, Budapest
<bdi><a href="https://www.wikidata.org/wiki/Q1114205" class="extiw" title="d:Q1114205"><span title="Hungarian photographer">György Klösz</span></a>
</bdi>
1896
<a rel="nofollow" class="external text" href="http://epa.oszk.hu/00000/00030/02201/pdf/02201.pdf">Vasárnapi Ujság 1896/17</a>