"Recreating da Vinci's 'Vitruvian Man' (Canon Man)" by GeometerArtist is licensed under CC BY-SA 2.0
"taking a leaf from the Fibonacci tree" by theilr is licensed under CC BY-SA 2.0
"Albert Einstein - Caricature" by DonkeyHotey is licensed under CC BY 2.0
"Galileo Galilei" by Trey Ratcliff is licensed under CC BY-NC-SA 2.0