SKETCHES is a collection of Polaroids made my Sassen between 2002 and 2010 in Africa.
Polaroids are often hard to reproduce, keeping their tactile feeling, this one solves the problem by showing them in the way a working photographer deals with them; piled on the table with the latest one being surrounded by small details from the previous ones. Its a nice touch.
There is a show of her work in FOTOHOF right now in case you are near Salzburg.
here the book info.