Blue Penguin Classics poetry paperback

I lost my blue Penguin Classics poetry paperback yesterday around 3pm near the Stillwater Public Library on West Main Street. It's a 320-page paperback with a blue cover and gold foil lettering, in decent but well-loved condition. Inside the front cover I wrote my initials 'P.P.' and there's a small coffee stain on the back cover, plus a folded bus-ticket bookmark tucked between pages 72 and 73. It means a lot to me because it's a gift from my grandmother and has sentimental value. If you found it, please drop me a note—I'd really appreciate getting it back.