1. La demanda del agua, un conflicto latente Creator: Greenpeace Format: Posters Collection: Stephen Lewis poster collection, circa 1921-2017 Institution: University of Massachusetts Boston, Joseph P. Healey Library
2. Referéndum vinculante ya! Format: Posters Collection: Stephen Lewis poster collection, circa 1921-2017 Institution: University of Massachusetts Boston, Joseph P. Healey Library
3. Blue Crane, or, Heron Creator: John James Audubon Format: Photographs Collection: Fine Arts Institution: Forbes Library