North American passenger railway routes in the 1930s. Social studies, intermediate grades. 1938.
Internet Archive
From a textbook uploaded by LexW
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North American passenger railway routes in the 1930s. Social studies, intermediate grades. 1938.
Internet Archive
From a textbook uploaded by LexW
An operator monitors the control panel at a massive power station. Social studies, intermediate grades. 1938. Harry Sternberg, illustrator.
Internet Archive
From a textbook uploaded by LexW