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Scientific American 1924-12

ScientificAmerican1924-12.jpg Scientific American 1894-01-20ThumbnailsTower Radio 1934-07Scientific American 1894-01-20ThumbnailsTower Radio 1934-07Scientific American 1894-01-20ThumbnailsTower Radio 1934-07Scientific American 1894-01-20ThumbnailsTower Radio 1934-07

"New scientific way to find out whether you can sing." Woman in gas mask connected to air flow instrumentation.

Artist: Howard V. Brown

Source: Steve Kirch

Restoration by: Michael Ward