Cream Sugar And Butter. Beat In 2 Eggs. Gradually Blend In The Flour. Chill Dough Overnight. Roll As Thin As Possible On Well Floured Board. Work With 1/4 Of The Dough At A Time. Keep Remaining Dough Chilled. Cut Into Diamonds With A Knife. Place On Greased Cookie Sheets. Brush Each Cookie With Beaten Egg White. Sprinkle With Sugar And A Pinch Of Cinnamon. Placd A Pecan Half In Center Of Each Cookie. Bake In Preheated 350 Degree F. Oven For 8 To 10 Minutes Or Until Edges Are Light Brown. Cool On Cookie Sheets 1 Minute, Then Remove To Wire Racks. Store In Airtight Tins.