Composite of three American / English prints: Trevor Allen (1939-2008), English painter and graphic artist. ''Purple Haze'', color serigraph, signed lower right, lower left num. 16/19, sheet dimensions 79 x 61 cm, K. Haugh, -American graphic artist of the 1960s, ''Beggars Burden'', enigmatic etching with drypoint and aquatint, lower right signed u. dated (19)67, titled in the middle, lower left number 14/25, traces of storage, sheet size 56,5 x 38 cm, James Belfoore (?), u.s. graphic artist of the 1970s, serial motif, color serigraph on grained handmade paper, signed lower right, lower left number 4/75, small marginal tear, sheet size 76 x 56 cm