Straight, Circular, Cylindrical Slide Rules (Faber Castell, Fowler's, Ottis King, Palmer's). Mechanical Calculators (Curta). Planimeters. Stepped Drum & Pinwheel Calculators (Brunsviga Odhner ). Adding Machines. Early Electronic Calculators.
Authentic Disney color magic lantern slides in their original box with and story leaflet Santa's Workshop...
DIsney color magic lantern slides in their original box with and story leaflet from the book Mickey...
The rapid development of electronics and computerization in the mid 20th century, and the invention of...
Received the package today - beautiful! My grandparents had purchased the postcards when traveling...