Assemblage art is a sculpture technique using found objects arranged in a composition. Pioneered in the early 20th century by artists like Picasso, Duchamp, and Dubuffet, it involves collecting everyday items and combining them in new contexts. Notable assemblage artists discussed include Joseph Cornell, who arranged objects in glass boxes; Robert Rauschenberg, who incorporated urban debris into his "combines"; and Louise Nevelson, known for her painted wood assemblages. A 1961 MOMA exhibition highlighted early European and American assemblage artists and their contributions to bridging collage and later Pop Art.