On the occasion of the 50th anniversary of Ralph Gibson's book The Somnambulist, the Thierry Bigaignon gallery is exhibiting all the images of this now mythical series. Forty-eight small-format silver prints are in dialogue with the American photographer's latest large-format digital prints. Always on the lookout for the latest photographic processes, he is constantly renewing and rethinking his practice. Ralph Gibson is a real avant-garde, a pioneer in the appearance of artists' books. For him, photography is a means of introspection. He decided to collect his pictures in a book and The Somnambulist was published in 1970 by his own publishing house, Lustrum Press. It was an immediate success at a time when the artist's book was not yet considered an artistic visual medium. Moving away from classic photojournalism, Ralph Gibson's photos are surrealist and unfold in a collection without text. Doors, windows and mirrors reflect a possible opening onto an unreal world. The new layout, the strong black and white contrast and the balance between reality and dream underscore the artist's interest in the New Novel and New Wave films. His pictures, which date from 1970, appear to be current. Timeless, this book is a work of art in itself.