The Busch-Reisinger Museum was recently gifted more than 70 sketchbooks kept by artist Otto Piene (1928–2014). Dating from 1935 to 2014, the largely unpublished sketchbooks reflect interdisciplinary, cross-media experiments from Piene’s long career in the Boston area and abroad, including both realized and unrealized projects. A pioneer in multimedia and technology-based art, Piene was long interested in optical perception and kinetic forces, resulting in a body of work that emphasizes co...