This online catalogue raisonné lists approximately 2,000 paintings, drawings, watercolors, mixed media, and "kinetic" works by the artist. The catalogue of the paintings is arranged in approximate chronological order; all other works are catalogued by medium. The authors note that the online catalogue raisonné is incomplete. For example, it includes only a small number of Hiller's known sketches and works on paper. Many other works are undocumented and are currently unlocated. Owners of works not included in the catalogue are encouraged to contact the author.