Large-scale artists' book of photographs and texts documenting the happening by Kaprow. "Rates of Exchange was carried out by a small number of couples in New York City, march 22nd and 23rd, 1975, under the sponsorship of the Stefanotty Gallery. The participants' own homes, environs and times were used. An initial meeting was held to discuss practicalities and a review of the event followed afterward. Such preparations and reflections are part of the signification process of the whole. As usual there was no audience." -- from Kaprow's postscript within the book.