The entire history of mathematics in one hour, as illustrated by around 300 postage stamps featuring mathematics and mathematicians from across the world. From Euclid to Euler, from Pythagoras to Poincaré, and from Fibonacci to the Fields Medals, all are featured in attractive, charming and sometimes bizarre stamps. No knowledge of mathematics or philately required.
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Source: http://notesonpaper.blogspot.com/2015/06/vintage-treasure-wanderer-stamp-album.html WEDNESDAY, 3 JUNE 2015 Vintage treasure: The Wanderer Stamp Album I’m not sure when it was that Irene Dove lost interest in stamp collecting … … but whenever it was her Wanderer Album of Postage Stamps of the World at some point in the last 70 years made its way into the world without her. […]
Source: http://www.wsj.com/articles/when-the-u-s-postal-service-also-delivered-babies-1472247581#livefyre-comment Mail the kids to grandma? A few frugal parents did, since the weight limit on parcel post was 50 pounds. By Thomas V. DiBacco Aug. 26, 2016 5:39 p.m. ET As a bid to stay relevant in the digital age, the U.S. Postal Service has been experimenting in select cities with delivering groceries. […]