Continuum anthology series - all 4 volumes (1974-75) VG+ DEAN KOONTZ

Here are all 4 volumes of the CONTINUUM anthology series, edited by Roger Elwood. Copies range from VG to near mint condition.

Continuum 1 - Dean Koontz, PJ Farmer, Poul Anderson, Anne McCaffrey

Continuum 2 - Gene Wolfe, PJ Farmer, Poul Anderson, Anne McCaffrey

Continuum 3 - PJ Farmer, Poul Anderson, Anne McCaffrey , Pamela Sargent

Continuum 4 - Gene Wolfe, Anne McCaffrey, PJ Famer, Poul Anderson,