The collections of the the Grace Hudson Museum and Sun House include over 30,000 interrelated artifacts. These objects include Grace Hudson's paintings and other artworks; John Hudson's Indian basket collection and field notebooks; the photographic work of Grace's father, Aurelius O. Carpenter; the Western women's writings of Grace's mother, Helen McCowen Carpenter; a small number of personal effects belonging to Grace's paternal grandmother, women's rights activist Clarina Nichols; household items and furnishings; 19th century sheet music; and family memorabilia. One of the most significant artifacts in the collections is the Sun House itself, the Hudsons' 1911 Craftsman-style bungalow. It is #926 on the list of California historical landmarks, and on the National Register of Historic Places.

Research appointments may be made by contacting Museum staff.

Donations to the collections are accepted based upon the Museum's mission of preserving, documenting, researching, and interpreting the lives and interests of the Carpenter and Hudson families. See the Grace Hudson Museum's Mission Statement.