MacTutor
14th April
On this day in 1855, Sam Loyd's first chess problem was published in the New York Saturday Courier.
On this day in 2005 Google released a Leonardo doodle (a day early).
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1928.
On this day in 2005 Google released a Leonardo doodle (a day early).
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1928.