thunderstruck9:Joe Tilson (British, b. 1928), Transparency Vallegrande Bolivia, October 10th, 1969.
thunderstruck9:Joe Tilson (British, b. 1928), Transparency Vallegrande Bolivia, October 10th, 1969. Screenprint in colours on rigid PVC, silver lumiline and paper, sheet: 71.5 x 51 cm. Numbered 9/70 -- source link