Dr. Ursprung´s exquisite research yields valuable knowledge concerning two of art history´s most underserved artists, Allan Kaprow and Robert Smithson, to propose that the assumed contiguity of traditional art history has marginalized both Kaprow´s Happenings and Smithson´s oeuvre. Moreover, the author reveals the importance of photography and writing in both of the artist´s works, and how their expansion of the artwork as textual and discursive has been thus far ignored by traditional art historian definitions.