During this period he continued his involvement with theater, designing sets for Martha Graham's Appalachian Spring and John Cage and Merce Cunningham's production of The Seasons.
Pada masa itu pula, ia meneruskan keterlibatannya dengan dunia teater, mendesain set panggung untuk Appalachian Spring dari Martha Graham dan The Seasons, produksi John Cage dan Merce Cunningham.