A small poster designed by David Wills announcing the Oz Police Ball, held as a benefit for the Oz defendants at the former Middle Earth club on March 6th, 1971. Printed in dark blue and green on white stock. 31.7x21cm. Prints an illustration from 'Canterbury Tales', and, below, the line-up and ticket outlets for the event. Slight edge-discolouration and faint creasing to lower left corner, o/w Very Good plus.