Copies 



1 Mr. R.T. McGoldrick, Box 293, Sheffield, Mass 



1 MacNeal Scliwendier Corp, 2556 Mission St., 



San Marino, Calif 



2 Hydronautics Inc., Pindell School Rd., Laurel, Md. 



1 J.G. Eng Res Associates, 3831 Menio Drive, 

 Baltimore 15, Md. 



