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R.M.Lenox: 1953, Robert Gates, Appalachian Landscape -- Phillips Collection (Washington)
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R.M.Lenox: 1954, Morris Louis, Pendulum -- Stanford University Museums (Palo Alto)
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R.M.Lenox: 1955, Jacob Kainen, Only in Darkness -- Phillips Collection (Washington)
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R.M.Lenox: 1956, Alma Thomas, In the Studio -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1958 (ca.), Alma Thomas, They Laid Him in the Tomb -- Phillips Collection (Washington)
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R.M.Lenox: 1958 (ca.), Sam Francis, Untitled -- Peggy Guggenheim Collection (Venice)
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R.M.Lenox: 1958, Kenneth Noland, First -- Pompidou Center (Paris)
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R.M.Lenox: 1958, Morris Louis, Blue Veil -- Fogg Art Museum (Cambridge)
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R.M.Lenox: 1959, Kenneth Noland, The Clown -- National Gallery of Art (Washington)
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R.M.Lenox: 1959, Morris Louis, Faces -- Smithsonian American Art Museum (Washington)
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R.M.Lenox: 1960, Alma Thomas, Reflections -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1960, Kenneth Noland, April -- Phillips Collection (Washington)
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R.M.Lenox: 1960, Morris Louis, Beta Upsilon -- Smithsonian American Art Museum (Washington)
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R.M.Lenox: 1960, Morris Louis, Gamma Delta -- Whitney Museum of American Art (New York)
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R.M.Lenox: 1961, Alma Thomas, Blue Abstraction -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1961, Morris Louis, Beta Kappa -- National Gallery of Art (Washington)
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R.M.Lenox: 1962, Alma Thomas, Blue Opus II -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1962, Morris Louis, 133 -- National Gallery of Art (Washington)
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R.M.Lenox: 1964, Gene Davis, Hot Beat -- Smithsonian American Art Museum (Washington)
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R.M.Lenox: 1964, Thomas Downing, Blue Spell -- Phillips Collection (Washington)
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R.M.Lenox: 1965, Alma Thomas, Trip through the Alps -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1965, Gene Davis, 65-2 -- Phillips Collection (Washington)
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R.M.Lenox: 1965, Gene Davis, Black Popcorn -- National Gallery of Art (Washington)
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R.M.Lenox: 1965, Gene Davis, Three Witches -- Virginia Museum of Fine Arts (Richmond)
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R.M.Lenox: 1965, Jacob Kainen, Seated Woman -- Phillips Collection (Washington)
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R.M.Lenox: 1965, Sam Gilliam, Koa -- Phillips Collection (Washington)
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R.M.Lenox: 1965, Sam Gilliam, Shoot Six -- National Gallery of Art (Washington)
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R.M.Lenox: 1966, Alma Thomas, Air View of a Spring Nursery -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1966, Alma Thomas, Etude in Blue -- Phillips Collection (Washington) (special exhibition)
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R.M.Lenox: 1966, Alma Thomas, Resurrection -- Smithsonian American Art Museum (Washington)