Perhaps I'm the last human on the planet to discover this, but if not.... The Met (Metropolitan Museum of Art) have a free copy in pdf form of Eliot Porter's wonderful photographs 'Intimate Landscapes' being an Exhibition Catalogue from 1979. There is no real substitute for a physical book but this is still a delightful collection and best of all, free. Have a wander over tohttps://www.metmuseum.org/art/metpublications/intimate_landscapes_photographs