Wallpaper Emily, Blue. Emily Wallpaper is inspired by a fragment of old Cretonne-patterned wallpaper found in a New England archive. Bold tree patterns with birds like these were popular in the USA in the late 1600s. Emily is printed using an old collograph printing technique, where the colours are printed over one another with no drying in between, making every metre unique. It is suitable for walls in both older and newly-built houses, for example, in the living room or kitchen.