Beth's Orange Cookies

INGREDIENTS

• 2 cups white sugar
• 1 cup shortening
• 2 eggs
• 1 cup sour cream
• 1 teaspoon vanilla extract
• 5 cups all-purpose flour
• 2 teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon salt
• 3/4 cup frozen orange juice concentrate, thawed
• 2 tablespoons grated orange zest
•  
• 1/2 teaspoon grated orange zest
• 2 tablespoons frozen orange juice concentrate, thawed
• 4 tablespoons butter, melted
• 1 1/2 cups confectioners' sugar