The European Studies Section (ESS) was formed on September 1, 2017 by the merger of two predecessor sections of the Association of College and Research Libraries (ACRL), a division of the American Library Association (ALA). These two previous sections were Slavic and East European Studies (SEES) and Western European Studies Section (WESS). It was logical to form a section encompassing the whole of the European continent.
SEES was East and WESS was West,
but now the twain have met.