https://www.museoreinasofia.es/en/collection/artwork/dorothy
Gum Bichromate – https://www.moma.org/collection/works/54923
https://collections.artsmia.org/art/81522/dorothy-gertrude-kaesebier
https://www.stedelijk.nl/en/collection/41763-gertrude-kasebier-dorothy