Found a first edition copy of 'The Great Gatsby' with a worn cover and a coffee stain on the back while trekking in the High Rockies.

I found an old book while trekking around the High Rockies. It’s a first edition of 'The Great Gatsby', and the cover is a bit worn out, but the pages are still intact. There is a subtle coffee stain on the back cover. I believe someone might have dropped it while enjoying a break amidst the stunning views. If you can describe the book more accurately, I’d love to return it to its rightful owner.