1) American Progress creator 2) American Progress muralist 3) Barcelona-born architect 4) Barcelonan architect 5) Catalonian architech josep 6) Famed artist 7) Famed Spanish muralist 8) Famous Spanish name 9) Ge building muralist 10) Great Spanish muralist 11) His works rest on easels 12) Holyoke Center designer Found on https://www.crosswordclues.com/clue/sert
(Space Electric Rocket Test) Early NASA suborbital and orbital tests of the performance of electron-bombardment ion engines. SERT 1 flew on a 30-minute suborbital mission, launched by a Scout X-4 from Wallops Island, on Jul. 20, 1964. SERT 2, which also studied how prolong... Found on http://www.daviddarling.info/encyclopedia/S/SERT.html