The attached An Historical Perspective of Respirators was written in 1985. This report was generated from a feasibility study to reinvent the Iron Lung, originally commissioned by David Crosby and Graham Nash: The Wooden Lung Project. Both musicians’ intent was to provide a more esthetic environment for one of their road manager’s father, who had been living in an Iron Lung for 25 years. The Crosby Nash Wooden Lung video shows this elegant wooden respirator actually being built. However, the significance of the Wooden Lung Project is not the wood …..it is the technology to drive the system.