Watercolour and ink drawing of 3 mycologists flying high in a mushroon / toadstool shaped hot air balloon entitled "Authorities high in Fungi, 1872" in John Sadler's handwriting - image could very well have been painted by John Sadler. The figure in glasses is likely Miles Berkeley; the figure with red beard could be John Sadler, but more likely to be Mordecai Cooke, the third figure is too indistinct to identify.