Prev Next Category: Envelope Letter from Nielsen 1979-02-05 Mogens Otto Nielsen, Denmark Section: Mail Art Network Sent from: Hjallerup, Denmark Medium: Printed matter, Paper, Marker Category: Letter, Envelope Dimensions (cm): 11 x 32.5 Pages: 5 Subject: mogens otto nielsen, atmosphere controlled, mail art, visual poetry, egmont, venice biennale 78, language as a living organism