I'm lucky to be one of the recipients of Miles Gibson's great Postcards.  They appear in the post at random intervals.  I think the postman enjoys them as well.

Sometimes there is a random intervention on these 'Guaranteed Genuine Works of Art', as it says on the back.  What could be more apt for today than this belle, receiving a shower of well-deserved hearts from the franking machine.  It must be love! Happy Valentine's Day!

Thomas Dawson's pancake recipe from 1585.  

From the British Library - http://www.bl.uk/ - as is this document, which analyses the geology of the new(ish) British Library building, highlighting the sources for the different stones, and fossils within the walls.  Good stuff.