There are company-history sites, and then there is the electrical engineer who accumulated more than 450 pieces of vintage Hewlett-Packard test equipment and built his own museum around them.
Visit Kenneth Kuhn’s HP Museum
Kenneth A. Kuhn’s site is an unusually dense archive of Hewlett-Packard’s original test-and-measurement world: oscillators, meters, generators, manuals, catalogs, journals, restoration information, historical essays, employee memoirs, and links into the larger network of people preserving HP history.
Kuhn says his collection contains more than 450 pieces, roughly 100 of them duplicates. Named examples include the HP200A, HP200B, HP200C, HP200D, HP200H, HP201B, HP202D, HP410A and HP500A, plus one of the surviving HP210A square-wave generators.
These are not decorative props. Kuhn is an analog electronics engineer who used Hewlett-Packard equipment professionally, studied its manuals, reverse-engineered its design ideas, and later taught some of those lessons to engineering students.
That changes the character of the site completely.
A museum where the manuals matter as much as the metal
The strongest part of the archive is that it does not stop at photographs of old instruments.
There are pages on dating vintage equipment, scans of manuals and documents, HP catalogs, HP Journals, restoration, early company locations, the original garage at 367 Addison Avenue, Bill Hewlett and David Packard, and the transition from Hewlett-Packard test equipment to Agilent Technologies and later Keysight Technologies.
Kuhn also links outward aggressively. He explicitly says he wants HP-history websites interlinked so that somebody finding one resource can reach the others.
That is an old-Web instinct worth preserving.
Instead of trying to become the only authority, the site behaves like a node in a specialist research network.
There is also a wonderfully human detail buried near the top: Kuhn’s shop cat Frisky appears beside an early HP200B and is identified as the official shop cat. The equipment is serious. The museum does not have to pretend the person maintaining it disappeared.
The page was still being revised in June 2026, more than two decades after the site’s copyright trail begins in 2003.
For a modern researcher, that longevity matters. Model numbers such as HP200A, HP210A, HP3580A or HP805C are exactly the kind of technical search terms that disappear inside generic corporate history pages but remain useful to collectors, restorers and engineers.
CacheRat’s 1,967 Ancient Web Domains research list is full of sites built this way: one person, one deep subject, and enough persistence to outlast several generations of corporate web design.
Kuhn’s museum is still doing the job.