JF Ptak Science Books Quick Post An Episode in the History of Dots
There is no telling, sometimes, where an interesting/odd bit might occur. I guess you could make the case that they occur everywhere and that it is just our inability to see them that limits their appearance. This may be the case with the following, a magnified part of a small part of a chart, where dots turn into squares:
The pamphlet topic is certainly a modest vanilla flavoring--prevention of farm theft (1936). However the cover is striking, so it is an easy thing to pick up. There's a bunch of anti-crime/catch-'em stuff and help on how to do that inside--there is also a two-page spread of mug shots of examples of people caught and convicted utilizing the services offered in the pamphlet. That's where Mr. Close comes in.
One interesting thing about the enlargement is that you can make the image go from near-negative to positive by tightly squinting your eyes--which is something I think you cannot do with the pre-pixelated Mr. Close.
In any event, it was a very nice find, found in an unusual and serendipitous place.
And the cover: