RS John L. Althri comi iirm Nina CT 111101 %TlIttiCTURAL KNOtht.ERS On Atop • Plielltri VOFIAlliAnow MEM Mt) -SMMS A Revisions July 24, 1990 STONE MCKAGE,CCTOBIR Z2,1390 ' SHUT 20 t • Revisions December 1, 1990 P9bruali ;I:J991_ Ir" f . ft, Cr a • . • c7Z77 “? •imenn•rsa4 - tic* irr .