Did you find a copy of On the Road at SeaTac (4/19)?

My boyfriend left his copy of On the Road at SeaTac this past Sunday afternoon between 4 and 6.30pm (4/19). It’s a Penguin Edition with a blue cover (see picture).

The book contained his favorite bookmark which looks like a rug, so it’s distinguishable for that alone. And the book also contained a note from his dad. So it’s more than just the book, it’s the sentimental value. It’s a long shot, but if you happened to find it please let me know. I’d appreciate your help