Prev Next Category: Envelope Ruth and Marvin Sackner Archive of Concrete and Visual Poetry 1980-03-03 Ruth, Marvin Sackner, USA Section: Mail Art Network Sent from: Miami Beach, FL, USA Medium: Printed matter Category: Catalogue, Letter, Envelope Dimensions (cm): 28 x 21.7 Pages: 170 Subject: ruth and marvin sackner, ruth and marvin sackner archive of concrete and visual poetry