Developmental 0.54 bar Emergency Intravehicular Suit (EIS) and Orbital Extravehicular Suit (OES) programs were conducted by NASA in the 1970's. The fabric mobility joint technology developed here was the basis for the Shuttle EMU development.

• Sears, William J, A Historical Review of Partial and Full Pressure Suits, . Accessed at: http://webpages.charter.net/mcelwain/PSUITS-Chronology.htm.