This is the helmet for a Hazardous Environment Protective Assembly (HEPA) suit. Spacesuit manufacturer David Clark Company, Inc. made these suits for technicians to wear while assisting astronauts in hypobaric chambers who were testing spacesuits. These suits resemble the Gemini spacesuits that David Clark also manufactured.
NASA transferred this suit to the Museum in 1972.
Transferred from NASA Manned Spacecraft Center