Roman Signer Signer's Suitcase Air Cushion Smoke-cross Box Water Pulse Fountain Box Six Pieces Across the River Balloon Air Sleeve Paper in River Fountain Balloon Shrinking Contained Under Water Two Iron Plates Line Sled Filming Rope Track Red Balloon Blue Air Balloon Balloon with Bucket Crater Box 1 Box 2 Sand Stairs Arc Water Tower Cat Rubber Band Pine Tree with Rubber Band Fire Waterfall Balloon on Track Water Sand Track Sand Pillar 1979-82 Bucket with Water Tauwetter Theatre of Hope