4. Let’s talk about skills, baby Woman Aircraft Worker – Library of Congress on Flickr Commons: http://www.flickr.com/photos/library_of_congress/2179930812/
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6. It works, but… Door paard getrokken taxi – Nationaal Archief on Flickr Commons: http://www.flickr.com/photos/nationaalarchief/2948560477/
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8. Technology makes life easier, right? Farrington Automatic Address Reading Machine Smithsonian Museum on Flickr Commons: http://www.flickr.com/photos/smithsonian/2550431145/
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12. Let’s get into it, shall we? Students at Washington High School, Library of Congress on Flickr Commons: http://www.flickr.com/photos/library_of_congress/2179076411/