Oliver Ammann<p>Join our <a href="https://swiss.social/tags/crowdsourcing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>crowdsourcing</span></a> project! Help georeference 1,497 digitised historical <a href="https://swiss.social/tags/maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maps</span></a> from the <a href="https://swiss.social/tags/ethlibrary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ethlibrary</span></a></p><p><a href="https://library.ethz.ch/en/locations-and-media/media-types/geodata-maps-aerial-photos/crowdsourcing-project.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">library.ethz.ch/en/locations-a</span><span class="invisible">nd-media/media-types/geodata-maps-aerial-photos/crowdsourcing-project.html</span></a></p><p><a href="https://swiss.social/tags/karten" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>karten</span></a> <a href="https://swiss.social/tags/citizenscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>citizenscience</span></a> <a href="https://swiss.social/tags/georeferencing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>georeferencing</span></a> <a href="https://swiss.social/tags/ethbibliothek" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ethbibliothek</span></a></p>