There appear to have been more than one book issued to accompany IBM's traveling exhibition of models based on da Vinci's scientific and technical drawings. This one is for a 24-page pamphlet issued in the 1980s that includes da Vinci's birth and death years in the title from the cover. An earlier one exists from the 1970s that has 32 pages and lacks the birth and death years. Another one exists from 1967 that also lacks the birth and death years and has no pagination numbering. Please do not combine these. The content of each is significantly different to warrant separate records in LibraryThing.