Surf-swimmers, 1870.

A highly detailed image denoting riding positions, stance,
duck-diving, waves in sets, off-shore winds and significant wave height.

This is very similar in composition and style to Wallis McKay (1873), see below.
Either McKay was responsible for this illustration,
or this artist was influenced her work.
Printed in
Wood, John George:
The Uncivilized Races of Men in all Countries of the World.
Volume 2
G. Routledge and Sons, London, 1870.
First published in 1868