JOHN MACGREGOR (Canadian, b. 1944)

SIBYL EDWARDS (Canadian b. 1944) A HARD EDGE OP ART PAINTING, "Forty-Nine Circles on Squares," 1969, watercolor on canvas, verso signed and dated. 15" x 15" Provenance: Personal Collection of Roy H. V

SIBYL EDWARDS (Canadian b. 1944) A CONSTRUCTIVIST SCULPTURE, "Shapes and Forms," CIRCA 1975, watercolor and gesso on wood. 13 3/4" x 13 3/4" Provenance: Personal Collection of Roy H. Van Horn, Houston

SIBYL EDWARDS (Canadian b. 1944) A GROUP OF ELEVEN BLACK AND WHITE OP ART EGGS, geometric and linear functions as expressions in monochromatic watercolor paint on eggshells, largest height: 3 1/4", di

SIBYL EDWARDS (Canadian b. 1944) A CONSTRUCTIVIST OP ART SCULPTURE, 1971, watercolor and gesso on wood, verso signed and dated, "Sibyl Edwards 1971." Height: 7 1/2" Width: 8 5/8" Depth: 1 3/8" Proven

SYBIL EDWARDS (Canadian b. 1944) A GROUP OF ELEVEN OP ART EGGS, painted eggshells, the exteriors with abstract multicolor optical illusion geometric motifs in a variety of sizes, largest height: 6",

SIBYL EDWARDS (Canadian b. 1944) A GROUP OF ELEVEN BLACK AND WHITE OP ART EGGS, oval, circular, and square expressions in monochromatic?watercolor paint on eggshells, largest egg height: 3 1/4", diame

SIBYL EDWARDS (Canadian b. 1944) A GEOMETRIC ABSTRACTION PAINTING, "Red to Yellow Gradient Squares," 1975, watercolor?on canvas boards, verso signed and dated. 7 3/8" x 3 5/8" Provenance: Personal Col

SIBYL EDWARDS (Canadian b. 1944) A GEOMETRIC ABSTRACTION PAINTING, "Sixteen Rainbow Circles," 1971, watercolor on canvas wrapped board, verso signed and dated. 3" x 3" Provenance: Personal Collection

SIBYL EDWARDS (Canadian b. 1944) A CONSTRUCTIVIST SCULPTURE, "Four White Wedges," 1970, gesso, watercolor paint, wood, verso signed and dated in black ink, "Sybil Edwards 1970." Height: 10 5/8" Width:

SIBYL EDWARDS (Canadian b. 1944) A GROUP OF TEN BLACK AND WHITE OP ART EGGS, the exterior of the eggs painted in matte and glossy textures; each derived from abstract geometric expressions applied in

SIBYL EDWARDS (Canadian b. 1944) A GROUP OF ELEVEN RED TO YELLOW GRADIENT OP ART EGGS, red, orange, and yellow gradient algorithmic expressions in watercolor paint on eggshells, largest height: 3 3/4"

SIBYL EDWARDS (Canadian b. 1944) A CONSTRUCTIVIST HARD EDGE SCULPTURE, 1971, watercolor paint and wood, verso signed, "Sibyl Edwards 1971." Height: 7" Width: 7" Depth: 2 1/4" Provenance: Personal Coll

SIBYL EDWARDS (Canadian b. 1944) A CONSTRUCTIVIST COLOR THEORY ART SCULPTURE, 1975, watercolor and gesso?on wood, verso signed and dated. 6" x 6 1/8" Provenance: Personal Collection of Roy H. Van Horn

SIBYL EDWARDS (Canadian b. 1944) AN OP ART COLOR THEORY PAINTING, 1972, watercolor on wood, verso signed and dated. 9 1/4" x 9 1/4" Provenance: Personal Collection of Roy H. Van Horn, Houston, Texas.

SIBYL EDWARDS (Canadian b. 1944) A GROUP OF THIRTEEN GEOMETRIC ABSTRACTION AND OP ART EGGS, colorful optical art, linear functions, and geometric abstraction expressed in watercolor paint on eggshell

SIBYL EDWARDS (Canadian b. 1944) A GEOMETRIC ABSTRACTION PAINTING, "Four Square Color Theory," 1975, watercolor on canvas board, verso signed and dated, "Sibyl Edwards 1975." 3 3/4" x 3 3/4" Provena

SIBYL EDWARDS (Canadian b. 1944) TWO HARD EDGE CLOCKS, CIRCA 1975, gesso, acrylic paint, wood and metal, diameter: 6 3/4" Depth: 2", with gesso and watercolor paint on wood, with Quartz clock mechan

SIBYL EDWARDS (Canadian b. 1944) A SURREAL CONSTRUCTIVIST ASSEMBLAGE SCULPTURE, "The Eye Egg," 1976, mixed media on board, verso signed and dated, "Sibyl Edwards 1976." 7 1/4" x 5 7/8" Provenance: Per

SIBYL EDWARDS (Canadian b. 1944) AN OP ART PAINTING, "Four Gradient Squares," CIRCA 1975, watercolor?on board. 9 3/8" x 9 1/2" Provenance: Personal Collection of Roy H. Van Horn, Houston, Texas.

SIBYL EDWARDS (Canadian b. 1944) A GEOMETRIC ABSTRACTION PAINTING, "Blue to Yellow Gradient Square on a Red Ground," 1975, watercolor on canvas board, verso signed and dated, "Sibyl Edwards 1975." He

SIBYL EDWARDS (Canadian b. 1944) A POP OP ART CONSTRUCTIVIST SCULPTURE, CIRCA 1975, watercolor on ice cream paddle spoons and wood, the whole painted in a rainbow gradient. 13 1/2" x 7 3/8" Provenanc

SIBYL EDWARDS (Canadian b. 1944) A GEOMETRIC ABSTRACTION COLOR THEORY CONSTRUCTIVIST SCULPTURE, "Stellated Octagon Color Wheel," 1976, watercolor and gesso on board, signed faintly, "Sibyl Edwards 197

SIBYL EDWARDS (Canadian b. 1944) AN OP ART PAINTING, "Nine Red to Yellow Gradient Circles," 1974, watercolor on board, verso signed and dated, "Sybil Edwards 1974." 4 3/4" x 4 7/8" Provenance: Person

SIBYL EDWARDS (Canadian b. 1944) A HARD EDGE COLOR THEORY SCULPTURE, "Gradient Cube in Indigo to Green and Yellow to Red," CIRCA 1975, watercolor?and?gesso?on wood, unsigned. Height: 1 5/8" Width: 1 5