I found this Thread and very appreciative of the effort put into the Lists. Great stuff.
My interest in Odham's Man's Books stems from my teenage years when my father got his monthly book and I read most of the books as they arrived. Sadly his collection disappeared upon his death as my mother would have had no interest in keeping the books. C'est la vie!
The Man's Book Club was a fabulous way to find books with enough interest to keep me, as a spotty teenager, reading instead of chasing skirt and potentially getting into trouble.
Now to the nub of me joining the Thread. One of the books I read was the story of an American working as a Night Manager/Porter in a NYC low-star Hotel. He discovers a dead guest with a suitcase full of cash. A lot of cash. He conceals the case and reports the discovery but, as no-one comes for the case, he keeps it, quits his job and goes off to Europe.
The book then recounts his meeting and teaming up with an elderly man who teaches him how to use the money wisely but also lead the life of a jet-setter travelling around the cities of Europe by Jaguar. The book ends with the younger man returning to America and setting up as an Art Dealer.
I am pretty sure this was one of the books in the Man's Book Series but I cannot remember the title or the author. Alas, I cannot identify the details from this thread and the wonderful data provided so, if someone can provide the answers to my clues above, I would be grateful to know the title and author to find a copy to re-read...it was one of those books in the series I would re-read with relish.