of Minnesota; also reprint, Univ. of Notre Dame, Notre Dame, Ind. 2 Nicolaides, J. D., On the Discovery and Research of the Para-Foil, International Congress on Air Technology, Nov. 1965, Little Rock, Ark.; also reprint, Univ. of Notre I3ame, Notre Dame, Ind. Nathe, G. A., Knapp, C. F., and Nicolaides, J. D., The and Targetry Applications, Feb. 8, 1966, Target Systems Planning Group, Hill Air Force Base, Ogden, Utah. 4 Nathe, G. A., An Analysis of the Para-Foil, AIAA Student Journal Vol. 5, No. 1, Feb. 1967, pp. 4-9. 5 Knapp, C. F., Nathe, G. A., and Nicolaides, J. D., Launching Technique for Tethered Para-Foils, Manual, May 9, 1966, NASA, Cape Kennedy, Fla. 6 Nathe, G. A., Knapp, C. F., and Hall, C. R., Wind Tunnel and Free Flight Testing of Number 125, Paper, June 1, 1966, Aero-Space Engineering Dept., Univ. of Notre Dame, Notre Dame, Ind. 7 Nathe, G. A. and Knapp, C. F., A Qualitative Discussion of the Lateral-Directional Stability of Tethered and Towed Para-Foils, Departmental Paper, June 6, 1966, Aero-Space Engineering Dept.. Univ. of Notre Dame, Notre Dame, Ind. 8 Gorin, B. F., An Approximation of Spanwise Collapse, Departmental Paper, June 1966, Aero-Space Engineering Dept., Univ. of Notre Dame, Notre Dame, Ind. 9 Nicolaides, J. D., Nathe, G. A., and Knapp, C. F., A Summary of the Tests Conducted on the Para-Foil, June 8, 1966, Aero-Space Engineering Dept., Univ. of Notre Dame, Notre Dame, Ind. 10 Nicolaides, J. D. and Knapp, C. F., Para-Foil Design, UNDAS-866 JDN Kept., Contract AF 33(615)-5004, Aug. 1967, U.S. Air Force Flight Dynamics Lab., Wright Patterson Air Force Base, Ohio. 11 Terman, F. E., Radio Engineers Handbook, McGraw-Hill, New York, 1943. 12 Ground Base VHF Automatic Direction Finder Equipment, Final Engineering Rept., Contract AF-08(606)-364, Aug. 1954, College of Engineering, Univ. of Florida, Gainesville, Fla. 13 Kane, M. T., Dicken, H. D., and Buehler, R. C., A Homing Parachute System, SC-4537(RR), Jan. 1961, Sandia Corp., Albuquerque, N.Mex. Coonce, C. A., Para-Foil Free-Flight Test Data, SCTM 66-2616, Dec. 1966, Sandia Lab., Albuquerque, N.Mex.