A team of four conservators treated the Wright Brothers' 1905 Flyer III in 2000-2001. The plane had been restored in the late 1940s under Orville Wright's supervision, and had been on continuous display at Carillon Historical Park in Dayton, Ohio since 1950. Humidity fluctuations, light exposure, vandalism and airborne soil had all taken their toll on the materials of the Flyer. The interactions of incompatible materials of the plane had contributed to the damage and would complicate the treatment. The team worked together and separately to clean, stabilize and protect the materials of the Flyer, as well as to improve its appearance. The textile treatments included in situ wet cleaning of the fabric cover and removal of iron corrosion staining from the fabric. Treatment of the propulsion system involved the removal and disassembly of the engine and other components in order to effectively clean and relubricate moving parts and apply surface coatings. Wooden elements of the airframe were surface cleaned and waxed. For this project, conservators from three very different specialties successfully collaborated to treat a large and complex artifact.