The children of ex-mayor of Jerusalem Teddy Kollek found a picture of their father doodled by the artist Pablo Picasso in a catalog to a 1965 Israel Museum exhibit of Picasso’s art.  The catalog was nearly thrown away, but has now been donated to the Jerusalem Foundation.

http://www.timesofisrael.com/picasso-sketch-of-ex-jerusalem-mayor-narrowly-avoids-trash/