PACE analog computer at electrical engineering laboratory, ca. 1960s.
Cryptographers Dorothy Du Boisson & Elsie Booker operating the codebreaking computer Colossus Mk. 2. Bletchley Park, England, ca. 1944.
UCLA’s SDS Sigma-7 computer. In 1969 this machine became the first node on ARPANET, early packet-switching network and predecessor of today’s Internet.
I saw one of these in person ages ago. By the time I figured out exactly what it was, some 10 years later, I regret not buying it
Woman with an IBM 403 Accounting Machine