signed lower right in red ink titled and numbered 2/40 lower center in graphite date unknown: circa 1960’s – 1970’s

no visible inscriptions California Computer Products company name printed along the bottom edge of the paper date unknown: circa 1960’s – 1970’s

signed middle right in blue ink titled upper left corner on the reverse in graphite

no visible markings date unknown: circa 1960’s – 1970’s

signed lower center in blue ink titled upper left corner on the reverse in graphite date unknown: circa 1960’s – 1970’s

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

signed lower right in red ink titled and numbered 31/500 lower left in graphite date unknown: circa 1960’s – 1970’s

no visible markings date unknown: circa 1960’s – 1970’s

signed lower right in blue ink titled and numbered 1/1 lower left in graphite date unknown: circa 1960’s – 1970’s

signed lower center in brown ink Crescent matboard company stamp on the reverse date unknown: circa 1960’s – 1970’s

signed lower right in ink titled upper left corner on the reverse in blue ink date unknown: circa 1960’s – 1970’s

signed lower right in ink