In Vertical Bridges: Poems and Photographs of City Steps, Paola Corso celebrates public stairways in her native Pittsburgh and around the world. Inspired by her Sicilian grandfather, a stonemason who built concrete steps, and her Calabrian grandfather and father, steelworkers who once climbed them to the mill, Corso is a storyteller. She shares memories of her family, the history behind Pittsburgh having more public staircases than any other city in the country, and curiosities about some of the world's most famous steps. Vertical Bridges includes photos by the author along with archival photos from the University of Pittsburgh Library's Pittsburgh City Photographer Collection.