Inscription
lower left in graphite: O.K.T.P.; lower right in graphite: Wiley; lower right verso in graphite by unknown hand: paynes/cx, sang/sepia/cx ocean/981/ex,v.moyen / Wiley: Shadow of the Whip OKTP
lower left in graphite: O.K.T.P.; lower right in graphite: Wiley; lower right verso in graphite by unknown hand: paynes/cx, sang/sepia/cx ocean/981/ex,v.moyen / Wiley: Shadow of the Whip OKTP