Prev Next MAIL ART NETWORK Invitation from Poisson Soluble Gallery 1985-04-00 Poisson Soluble Gallery, Spain Sent from: Poisson Soluble Gallery, Madrid, Spain Medium: Printed matter Category: Postcard, CFP, Envelope Dimensions (cm): 12 x 17.5 Pages: 2 Notes: "Soluble Mail" Subject: poisson soluble gallery, mail art, soluble mail