How to find subjects in need of photography for Wikipedia, Wikimedia Commons, and Wikidata.
Scan the National Register of Historic Places listings in Cambridge, Massachusetts table for empty cells in the Image column.
Use the Wikipedia mobile app Places tab to find W icons, which represent articles lacking a designated lead image in the infobox.
Use WikiShootMe to filter for Wikipedia (yellow) and Wikidata no image (red).
Use PetScan to filter specific categories by setting Lead image to No, though this often includes historic biographies and broken infoboxes.
Use the Wikidata Query Service with SPARQL to bypass Wikipedia infobox errors and find physical locations lacking a global free image.
#defaultView:Map
SELECT ?item ?itemLabel ?coord WHERE {
# Located in the administrative territory of Cambridge, MA
?item wdt:P131* wd:Q49111.
# Must have geographic coordinates
?item wdt:P625 ?coord.
# Must have an English Wikipedia article
?article schema:about ?item;
schema:isPartOf <https://en.wikipedia.org/>.
# Must NOT have an image file attached
MINUS { ?item wdt:P18 ?image. }
# Fetch the English labels for the map pins
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}