query: SELECT ?thing ?thingLabel ?inv ?url WHERE {
  VALUES ?in {wd:Q82133 wd:Q2210813} # Bodleian and Sackler
  ?thing p:P195 ?s; wdt:P953 ?url.
  ?s ps:P195 ?in
  OPTIONAL { ?s pq:P217 ?inv }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  } ORDER BY ?thingLabel