Muellner has
performed slide lectures at numerous venues in the U.S. and Europe, including MoMA P.S. 1, the Carnegie Museum of Art, The Photographers Gallery (London), the National Center for Contemporary Art (Saint Petersburg) and the Museum of Contemporary Photography (Chicago).
Cage
lectured throughout; David Tudor played the piano, though what he
performed is uncertain; Charles Olson and M.C. Richards read poetry from a ladder; Robert Rauschenberg's «White Paintings» were hung from the ceiling and he played records on an old wind - up phonograph; film and
slides were projected on opposing walls and possibly on Rauschenberg's paintings; and Merce Cunningham danced, at one point followed by a dog.