Post card of a surfing dolphin. Annotated "Poroise diving".
Post card of a dolphin. Annotated "Dolphin. Temporarily stationary ?ft below the surface. Record of a difficult subject but not a good photograph". Marked "12" in red.
Post card of a penguin. Annotated "WD Walker. Title 'The Southern Penguin Nuyt's Archipelago Great Australian Bight" and "Penguin".
Post card of WD Walker using camera at sea.
Post card of a camel's head with flies. Annotated "The camel even is not exempt from the attention of the flies. (See next picture). WD Walker title (series of three) ". Remainder missing. Stamped copyright WD Walker. Marked "12" in blue.
Post card of WD Wealker climbing a tree to reach an eagle's nest.