I think you'll find that _To Hell With Fishing_ was Webster and Zern.......
_To Hell With Fishing_, Ed Zern and HT Webster (really)

I have no reason to doubt your word; and besides, I scrounged up
several of Zern's books still in my possession. (When you have four
kids who frequently return to visit the Old Folks, hanging onto books,
tools, and other property is a problem. Since they all remember Ed
fondly from the year he spent here, hanging on to his books is even
more difficult).

I found that my blanket statement was incorrect. _A Fine Kettle of
Fish Stories_ was illustrated by John McDermott.

_Hunting and Fishing from A to Zern_ is, as the title suggests, a
larger collection of Zerniana (300+ pages) and some of the stories are
illustrated by Tom Webster and some by Zern.

All the illustrations in _Are Fishermen People?_ are by Zern.

So it's a mixed bag, which I had forgotten in the years since I last
read those books.

vince