1. Harper, R. P. Jr. "Flight Evaluations of Various Longitudinal Handling Qualities in a Variable stability Jet Fighter, It GAL Report No. TB-757-F-12 (WADC TR 55-299), July 1955.
2. Harper, R. P. Jr. "In-Flight Simulation of the Lateral-Directional Handling Qualities of Entry Vehicles, 'I CAL Report TE-1243-F-2, (WADD TR61-147), February 1961.
3. Harper, R.I? Jr."FlightEvaluation in Variable Stability Airplanes of Elevator Control Motion Gradients for High Speed Bombers," GAL Report TB-969-F-2 (WADC TR56-258), October 1956.
4. Kidd, E.A. and Harper, R. P. Jr. "Fixed-Base and Flight Simulation of Longitudinal and Lateral-Directional Flying Qualities, CAL Report No. TB-1516-F-1 (ASD TR61-632), September 1962.
5. Kidd, E.A. and Bull, G. "HandlingQualities Requirements as Influenced by Pilot Evaluation Time and Sample Size, GAL Report No. TB-1444-F-1, February 1962.