I would agree that it's a Fellows' illustration, but it isn't his best work. Also, I'm not aware of a "Fell" illustrator doing Esquire/Apparel Arts work at that time.Ah, a Fellowes drawing! His signature is shortened, just FELL in this drawing, which I don't recollect seeing. Unless of course it is a different artist altogether. I love Fellowes' art, and it's good to see it pop up here on our forum now and then. Some time ago, I bought that book with a collection of his drawings and I do look at them from time to time.
Also, regarding Esquire, I had been borrowing bound volumes of the magazine now and then from my university's library for the last couple of years, just to look at the old adverts and also to read some of the articles and stories. A lovely treat! The library has a complete collection from Vol 1 onward. I have been focusing on the 1950s and 1960s, but may go back to an earlier period.
My borrowing was cut short when the lockdown hit, and the library was completely shut down from March-April until August 10th, when they opened it to university students, faculty and staff -- but alas, not to the general public. Unfortunate, because I firmly believe that a state university should be very open to the public in general, and in the past, I have tried to foster more interactions between town and gown on my campus and in my city. Ah well, the virus is playing havoc with many things.
I'm sure you've seen it, but just in case, AAAC member @Flanderian ran a long and outstanding thread of all the '30s and '40s "Esquire" illustrations starting here: #1
And by chance, is this the book you are referencing #61 or is the one you got a book only on Fellows' work? If the latter, I'll start looking for one for myself if you recommend it?