IBM's website has photos and information about their Antique Attic exhibit, showcasing their collection of mechanical calculating devices.
"The nearly 400-year history of mechanized calculation was created by men and women with varying and diverse talents, temperaments, backgrounds and education, working in such fields as mathematics, the sciences, government, business and commerce. It is a history not just of singular inspiration and genius but also the continuing, collective discovery of new materials, skills, technologies and techniques to implement and enhance the plans and dreams of individual inventors and scientists."
Above, a Babbage Analytical Engine