Desert water bag

17jun11waterBag

Undated image from http://tucsonkathy.com/cool-springs-arizona/ .

“For the traveler trekking across America during the 1920s and 1930s, transportation by car was rife with problems… Nothing inspired more dread than a plume of steam billowing from a screaming hot radiator…
“To ease their panic, motorists relied on portable ‘water bags’ to carry along extra liquid… When draped outside [of the car] …air rushing over their exterior created an effect likened to ‘wind chill.’ The intense evaporation caused contents inside the pouch to cool.”

Excerpt from Google scan of Route 66 Remembered book by Michael Walz  https://books.google.com/books?id=s0hVI-EbPkEC&pg=PA115#v=onepage&q&f=false .

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