Printer for Fred Jahn, Munich (c. 1980--see 1992.71.26-44) Fine art printer, J. Chr. Sørensen, Denmark, 1971-1973; fine art printer, Lakeside Studio, Michigan, 1973-1974; fine art printer, Grupo Quince, Madrid, 1974-1976; fine art printer, I.E. Graphics, Copenhagen, 1977-1979; fine art printer, Niels Borch Jensen, Copenhagen, since 1979.