A book containing 30 photographs of internal and external views of Windsor Castle, with accompanying text and (attached to the first page) a pamphlet entitled "Windsor Castle: Thirty Photographs printed in colour, by Ernest Edwards". However most of the photographs were in fact taken by Disderi, with some done by Ernest Edwards. Two versions of the book were produced; the more expensive proof edition featuring photographs printed using 'permanent colours' which may be a refererence to the photogelatine or heliotype process that Edwards invented in the late 1860s, and a print edition that included photographs 'mounted plainly'. Edwards was responsible for printing all of the photographs in the book.