Here's a cool old air conditioning system from a Lincoln I didn't get exterior photos of

similar to the system I saw in a Packard, possibly due to this late 50s Lincoln getting input from former Packard president James Nance who landed at Ford Lincoln Mercury after Packard shut down in 1956, the cold air is pumped up the tubes

through ducting above the headliner

to vents above the backseat, and the front seats