NASA Iris sounding rocket was designed for 45 kg payloads to altitudes of about 300 km from Wallops Station.

• First Iris flight.

  First flight of NASA's Iris sounding rocket successful, designed for 100-pound payloads to altitudes of about 200 miles, from Wallops Station.

• Second Iris rocket test from Wallops.

  Second Iris rocket rose to 140 miles with a payload of 125 pounds from Wallops Station.

• 17 - Emme, Eugene M, Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space 1915-1960, NASA, 1961. HTML when accessed: http://www.hq.nasa.gov/office/pao/History/timeline.html