Diving book and illustrations

Over the past few days I have come across a few interesting books that I found attractive due to their illustrations and covers.
Here are some that I found since this past weekend.

First up is
Diving For Fun
by Joe Strykowski
©1974
published by Dacor Corporation
LCCN 74-31233

Illustrations are by Ernie Duerksen

The cover isn't what really attracted me although it looked a bit vintage and hinted that there might be some great illustrations inside.

These were among the best.

and the funniest one of all is the inflatable diving suit!