What interests me in this is that those who worked on it were almost all "white men." "Mongolians" (i.e., Chinese) were specifically banned, and later, even under pressure from the Roosevelt administration only a handful of Blacks were allowed to work. This was in the 1930's. Times have changed.
There is also an article in this magazine on the clothespin. In 1998 the Smithsonian Institute's National Museum of American History had an exhibit on "American clothespins." People were nostalgic. Then one day, the curator of the exhibit, heard a boy ask his father, "What's a clothespin, Dad?" Here is this wonderful marvel and when is the last time most of us used one? Remember clothespin people. Take a spin through nostalgia today.