signed lower right in graphite by both artists numbered A.P. 46/51 lower left in graphite from the Lufthansa Airlines Artists of the World Series, which were given out to their first class customers as a thank you.

signed lower right in graphite by both artists numbered A.P. 46/51 lower left in graphite from the Lufthansa Airlines Artists of the World Series, which were given out to their first class customers as a thank you.

signed lower right in graphite by both artists numbered A.P. 46/51 lower left in graphite from the Lufthansa Airlines Artists of the World Series, which were given out to their first class customers as a thank you.

signed and dated upper right verso in graphite titled upper left verso in graphite provenance: from the Grace Hertlein Collection and Archives

signed and dated upper right verso in graphite titled upper left verso in graphite provenance: from the Grace Hertlein Collection and Archives

signed lower right in graphite numbered 38/125 lower left in graphite signed, titled, dated, and software inscribed upper left corner verso in black ink software: TRPL via FORTRAN provenance: from the Grace Hertlein Collection and Archives

signed and dated lower right in graphite numbered lower left on the reverse in graphite from a series of 6 color offset lithographs printed and published by Hamburg Griffelkunst Association, Hamburg, Germany

signed and dated lower right in graphite numbered lower left on the reverse in graphite from a series of 6 color offset lithographs printed and published by Hamburg Griffelkunst Association, Hamburg, Germany

signed and dated lower right in graphite numbered lower left on the reverse in graphite from a series of 6 color offset lithographs printed and published by Hamburg Griffelkunst Association, Hamburg, Germany

signed and dated lower right in graphite numbered lower left on the reverse in graphite from a series of 6 color offset lithographs printed and published by Hamburg Griffelkunst Association, Hamburg, Germany

offset lithograph after an original unique computer-generated phototypeset image: signed lower left in graphite titled and numbered 45/10 lower center in graphite dated 1972/74 lower right in graphite offset lithograph published by Virginia National Bankshares, Inc., for annual report, 1973, issued 25 February 1974, Norfolk, Virginia original unique computer-generated phototypeset image: hardware: DEC PDP-10 Computer […]