1952 IBM 604 Calculator Computer da vinci flying machine art vintage print Ad

1967 U. S. Naval Laboratories Pasadena CA Archimedes Da Vinci Galileo Print Ad

1984 Chalk Board PowerPad vintage print Ad

1960s IBM Leonardo Da Vinci Exhibit Booklet

1967 Martin Marietta RIAS Maryland Classroom Chalkboard Equation 2-Page Print Ad

1952 IBM: da Vinci, Flying Machine Vintage Print Ad

1977 Lomac Logical Machine Corporation Vintage PRINT AD Leonardo Da Vinci 1970s

1960s IBM Exhibit LEONARDO DA VINCI Booklet SB 28 Pgs