Hayden's Calculator Museum

Nice work! Great collection, enhanced by the knowledge of owning every model in the collection. I also love the included "analog" calculators, slide rule and abacus. I look forward to further additions to the collection. Do you accept donations?

I am saddened by the absence of anything HP, but I can see there is no need to duplicate the Museum of HP Calculators, so it would be nice to add that one to the Other Calculator Sites page.

https://www.hpmuseum.org/

If you're ever in Bonn, I very strongly recommend the Arithmeum, a museum full of devices built for computation: abaci, clocks, mechanical calculators, vacuum tube devices, modern machines.

https://www.arithmeum.uni-bonn.de/en/arithmeum.html

See also the glorious 1990s web design aesthetic of the "Slide Rule Universe!":

* https://www.sphere.bc.ca/test/sruniverse.html

No Sinclair? I’m not much of a calculator fan, but if I started a collection, I’d probably start there.