Mail art correspondence from Germany

From the collections of Bart Boumans and Willy Scholte, 1980s. Including original envelopes. (1) Two lithographed cards from Robert Rehfeldt, 15 x 10.5 cm. One titled 'Petit Paysage Structurelle', signed in print.

(2) Correspondence from Jürgen Gottschalk from Worpswede DDR (11x), Birger Jesch from the DDR (5x), Michael Groschopp (22x), Klaus Groh (4x), Bernd Lobach (3x) and miscellaneous items including an invite for a show by Juppiter Larsen at Kunoldstrasse Kassel. (16x). (3) Xeroxed catalogue for a mail art project curated by H.F. Fricker. (4) Offene Briefe (Open Letters), a project initiated by Jürgen Olbrich, consisting of an exercise book sent around in the mail art network to gather contributions. This 'Zeichenheft' was sent to and from Bart Boumans, participants include Robin Crozier, Jürgen Olbrich, Kum-Nam Baik from Korea and some others. (total 67)