Cover Artist & Illustrators of Andre Norton's English titles
Posen, Michael
Sorceress of the Witch World ~ Gollancz, 1988, pb, UK
Spell of the Witch World ~ Gollancz, 1988, pb, UK
Three Against the Witch World ~ Gollancz, 1987, pb, UK
Trey of Swords ~ Gollancz, 1989, pb, UK
Warlock of the Witch World ~ Gollancz, 1988, pb, UK
https://www.andre-norton.com/special-sections/cover-artist/900-posen-michael#sigProIdd6203b309c