Orange Lonely Planet pocket travel guide

I lost my orange Lonely Planet pocket travel guide to Europe yesterday around 3pm. It's a small paperback, about 4x6 inches, with a bright orange cover and a slightly creased spine. I last had it outside the Columbus Metropolitan Library on Grant Ave near the main entrance after grabbing a quick coffee. Inside the back cover is a blue sticker with my initials KP and I tucked a folded Columbus city map in the back pocket. It was a gift from my sister and I really need it back for an upcoming weekend trip—it's practical and sentimental to me.