1969
32.6 x 23.3 cm (12 13/16 x 9 3/16 in.) letter: 29.7 x 21.2 cm (11 11/16 x 8 3/8 in.) map: 21.2 x 29.7 cm (8 3/8 x 11 11/16 in.)
Color photocopy with silver fiber-tip ink
20th centuryGermanColor offset
20th centuryGermanPhonograph record in silkscreened sleeve
20th centuryGermanLithograph printed in colored ink on paper
20th centuryGermanChromogenic print mounted to black card
20th centuryGermanLithograph printed in black ink on white wove paper with graphite additions, ins
20th centuryGermanEtching and lithograph printed on white wove paper
20th centuryGermanOffset lithograph printed in colored ink on wove paper
20th centuryGermanScreen print printed in black ink on vinyl with brown oil paint ("Browncross")
20th centuryGermanFelt and reel of audio-tape
20th centuryGermanPhonograph record with cover, stamped
20th centuryGermanIssue of "Der Spiegel"
20th centuryGerman