While looking for possible wallpaper patterns for my bedroom I stumbled upon Trustworth Studios, which makes reproductions of designs by C.F.A. Voysey. I absolutely LOVE his textile designs. Lots of birds and animals and flowers...all beautifully stylized. He started designing wallpaper in 1883 and worked until the 1920s...so his patterns were influenced by both the Arts and Crafts Movement and Art Nouveau.
They have a lot of Voysey's original sketches and textile designs at the Victoria and Albert Museum in London. Some of the pieces from their collection have been digitized and are available for viewing online here. And you can even order printed reproductions of some here. Next time I'm in London I'm definitely taking a field trip to see them in person.