(Albers, Josef). THE INTERACTION OF COLOR by Josef Albers. Yale University Press, New Haven, 1963. Edition of 2000 copies, of which this is one 50 signed and numbered by Albers. Large quarto (c 13 x 10 inches). Signed and numbered "38/50." Cloth slipcase containing text volume (cloth, 80pp.) and cloth chemise-style box with concordance to plates (wraps, 48pp) and eighty folders (13 x 10 inches, opening to 13 x 20 inches) containing the plates, each with a protective tissue to prevent offsetting of the colors. Plates are printed in as many as twenty colors, with a combination of silk-screen (serigraph), four color separation and photo-offset processes. The box and spines in a rich deep brown, without the fading often seen with this set. The internals are Fine and very fresh. We have not seen a copy from the signed edition before, and there are none on offer online; the work is now scarce even in the large regular edition, and rare with the signature.