From the late 60's onwards, Barry focused more closely on the printed word, which allowed him to convey concepts without the use of a physical form. He published book projects, printed text on index cards, and worked with slide installations projecting fragments of language or short sentences onto walls. He also developed his characteristic "Word Works", playing with panes, spaces and scales, pasted on walls, and windows as foils or scattered as aluminum letters on the floor. Single words address the viewer directly, and only become a complete work once grasped by the mind. For the exhibition in Hamburg, the artist has developed a special work installed on the gallery’s ground floor window, using the signature capital letters typeface he developed in the mid-1970s.