What better way to wile away the afternoon than listening to bold voiced mid-century American male narrators explaining the principles of operations of various pieces of equipment? What’s nice about these old technical videos explain technologies as they were being introduced as new. While automotive engineering has moved on in leaps and bounds, these were the building blocks our current machines evolved from. Hit the entire list on Jeff Quitney’s YouTube channel or click past the jump where we’ve got the playlist embedded for your time-wasting pleasure. Hat tip to Josh!