From the product blurb: Maps for Verne. A set of nearly 20 high-resolution maps of world cities and locations, as seen in the Victorian Era. From railway maps of the United States to Constantinople under the Ottoman Empire, with the centerpiece being a 50 square mile map of London at a resolution suitable for printing at any size, annotated, interactive and designed for use with any form-compatible pdf reader (including the iPad using pdfExpert).