History: Engineers checking the control panel of the new White House air-conditioning system, Washington, DC, 1952 [771x595]

https://i.redd.it/40k6f3uq8j231.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/bx21zi/engineers_checking_the_control_panel_of_the_new/?utm_source=ifttt