 Subjects range from the artist's innovative abstractions to her iconic large-format flower, skull, and landscape paintings to paintings of architectural forms and rocks, shells, and trees.Initially, the collection was made of 140 O'Keeffe paintings, watercolors, pastels, and sculptures, but now includes nearly 1,200 objects.To best share materials from its collection, the museum has moved away from the standard exhibition format, and rotates featured works on view in its Museum Galleries.