In Black Iris (painting), how is the List of related paintings of the Related paintings elucidated?
Black Iris; The Dark Iris No. 1, 1926, (CR 556), Oil on Canvas, 16x12" (40.6x30.5), private collection, 1994
Black Iris; The Dark Iris No. 3, 1926, (CR 557), Oil on Canvas, 36x29 7/8 (91.4x75.9), Metropolitan Museum of Art, 1969
The Black Iris; The Dark Iris No. II; Dark Iris, 1926, (CR 558), 9x7" (22.9x17.8), Collection of Aaron I. Fleischman, 1991
Dark Iris; Dark Iris No. 1 1927, (CR 583)  32x12 (81.3x30.5), Colorado Springs Fine Arts Center (FA 1954.4)
Dark Iris No. III; Dark Iris No. 3; Dark Iris, No. 3, 1927 (CR 602), Pastel on wove paper, Georgia O'Keeffe Museum (1997.04.07)
Black Iris;  Black Iris – VII; Small Black Iris, (CR 883), 1936 Oil on Canvas (19 1/2 x 16"), private collection, 1996
Untitled (Iris), 1936 (CR 884), Graphite on wove paper 9x6 (22.9x15.2), private collection, 1987
Black Iris VI; Black Iris II, 1936,  (CR 885), Oil on Canvas (36 x 24) Collection: Curtis Galleries, Minneapolis, Minnesota, 1998
Georgia O'Keeffe Metropolitan Museum of Art Georgia O'Keeffe Museum Colorado Springs Fine Arts Center