signed lower center in blue ink titled and numbered 1/1 lower center in graphite titled upper left corner on the reverse in blue ink

no visible inscriptions

signed lower right in ink titled and numbered 1/1 lower left in graphite

signed lower right in blue ink titled and numbered 1/1 lower left in graphite

signed lower right in ink titled lower left in graphite

1 – signed lower right in ink 2 – signed and numbered 8/1000 lower left in ink – California Computer Products printed along the bottom edge

signed lower right in red ink titled and numbered 1/1 lower left in graphite

signed and numbered 3/4 lower right in red ink

titled lower left in graphite date unknown: circa 1960’s hardware: IBM 7094 computer and Dell SC 4020 hard drive software: FORTRAN Using a FORTRAN program on an IBM 7094, a tape was generated for off-line use on an SC 4020, which made the plot. The plotting subroutine interpreted a matrix as the dependent height variable. […]

signed middle right in blue ink date unknown: circa 1960’s – 1970’s

titled upper left corner in graphite “each drawn individually original computer and signed” written on the reverse of the matboard in graphite

signed lower right in blue ink titled and numbered 1/1 lower left in graphite title in on the reverse of the matboard in blue ink