Ah! The plot thickens. The Fables of La Fontaine are well known, but I hadn’t heard of Montaigne before. Apparently there is a link!
First there is this: https://www.jstor.org/stable/458505 “Montaigne as a Source of La Fontaine's Fable: La Mort et le Mourant” It notes major similarity and possible link between Montaigne’s philosophical essay and Fontaine’s fable.
But even more interesting is this: https://www.worthpoint.com/worthopedia/1659-essays-michel-de... It’s two books—essays of Montaigne side by side with illustrated (by Hooghe) fables of Fontaine. Not a single book as you described, but interesting to see that there is clearly some connection between the two!
First there is this: https://www.jstor.org/stable/458505 “Montaigne as a Source of La Fontaine's Fable: La Mort et le Mourant” It notes major similarity and possible link between Montaigne’s philosophical essay and Fontaine’s fable.
But even more interesting is this: https://www.worthpoint.com/worthopedia/1659-essays-michel-de... It’s two books—essays of Montaigne side by side with illustrated (by Hooghe) fables of Fontaine. Not a single book as you described, but interesting to see that there is clearly some connection between the two!