Trigger warning if you're susceptible!: The last ad refers to a 1927 $400 million carbon tax!
Railways and railway-related ads were common in these National Geographic ads - near the end of the Roaring Twenties.
Additional posts from this series can be found at the bottom of the Short Subjects Index page.
US $1000 in 1927 equals about US $14,000 in 2019
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The Milwaukee Road paid for a two-page spread! ...
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Below: See and get German things! ...
Hitler was just out of jail, but then he earned himself
a public speaking ban in Bavaria until 1927 ...
Both volumes of Mein Kampf were available and selling briskly by 1927.
... In the 1930s these became 'Must Have!' but seldom-read gifts for
newlywed couples in Germany - making the author independently wealthy.
'Quaint Costumes' - some with armbands.
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And a couple more which you might find interesting ...
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Below: Sleeve valves were an interesting technology - with some later aviation connections.
However, just like early poppet valves, they had their own shortcomings.
However, just like early poppet valves, they had their own shortcomings.
The same company (Willys) later produced one version of the famous WW2 vehicle
which became known as the 'Jeep'.
which became known as the 'Jeep'.
After posting, Jim Christie provided this link to a contemporary textbook
to show exactly how these sleeve valves worked: