the 1928 Pressa Show scheduled for April–May 1928. The state delegated Lissitzky to supervise the Soviet program; instead of building their own pavilion, the Soviets rented the existing central pavilion, the largest building on the fairground. To make full use of it, the Soviet program designed by Lissitsky revolved around the theme of a film show, with nearly continuous presentation of the new feature films, propagandist newsreels and early animation, on multiple screens inside the pavilion and on the open-air screens. His work was praised for near absence of paper exhibits; "everything moves, rotates, everything is energized" (). Lissitzky also designed and managed on site less demanding exhibitions like the 1930 Hygiene show in Dresden. Along with pavilion design, Lissitzky began experimenting with print media again. His work with book and periodical design was perhaps some of his most accomplished and influential. He launched radical innovations in typography and photomontage, two fields in which he was particularly adept. He even designed a photomontage birth announcement in 1930 for his recently born son, Jen. The image itself is seen as being another personal endorsement of the Soviet Union, as it superimposed an image of the infant Jen over a factory chimney, linking Jen's future with his country's industrial progress. Around this time, Lissitzky's interest in book design escalated. In his remaining years, some of his most challenging and innovative works in this field would develop. In discussing his vision of the book, he wrote: In contrast to the old monumental art [the book] itself goes to the people, and does not stand like a cathedral in one place waiting for someone to approach ... [The book is the] monument of the future. He perceived books as permanent objects that were invested with power. This power was unique in that it could transmit ideas to people of different times, cultures, and interests, and do so in ways other art forms could not. This ambition laced all of his work, particularly in his later years. Lissitzky was devoted to the idea of creating art with power and purpose, art that could invoke change. Later years In 1932, Stalin closed down independent artists' unions; former avant-garde artists had to adapt to the new climate or risk being officially criticised or even blacklisted. Lissitzky retained his reputation as the master of exhibition art and management into the late 1930s. His tuberculosis gradually reduced his physical