Lot 49: Map Projection: The Snail; Probabilty Pyramid I and II, 1978 and 1981

Map Projection: The Snail; Probabilty Pyramid I and II, 1978 and 1981
Three lithographs in colors, on Rives BFK paper, with full margins, snail I. 24 1/4 x 30 1/8 in. (61.6 x 76.5 cm); snail S. 29 x 36 in. (73.7 x 91.4 cm); both pyramid I. 23 x 31 in. (58.4 x 78.7 cm); both pyramid S. 30 x 42 in. (76.2 x 106.7 cm);  all signed, dated `78' and `81' and numbered 38/40, 30/75 and 10/50 in pencil (there were also 10 artist's proofs), published by Pace Editions, Inc., New York, minor soiling, otherwise all in very good condition, all framed.