Show CURB STOCKS STIFFEN LATE NEW V YORK June 20 W The The curb stock list stiffened In the late dealings Thursday after displaying a heavy tone In the te fore part of the session While some issues issues' canceled their declines and nd emerged with wih small gains there were a number of heavy spots spots' spot still sti in evidence at at the close Pan-American Pan Airways got up nearly 3 points poInt to 38 and Lake LakeShore LakeShore Shore Mines advanced more than 1 1 to 51 Pittsburgh Plate Glass lost more than 6 points point at 60 GO and Aluminum Alum of America America lat t tt 02 52 2 and Gulf Gul Oil 01 at 65 were down about a point each |