Is it possible to get a list of Cl/Cd values for various NACA Airfoils?
Perhaps the most important resource for airfoil data is the NACA (the predecessor of NASA) Report No.824 Summary of Airfoil Data by Abbott, Von Doenhoff and Stivers.

This report contains the description, generation and experimental data like variation of lift, drag and moment coefficients with angles of attack for a number of NACA airfoils.

You can also see NACA report No. 460 The Characteristics of 78 Related Airfoil Sections from the Tests in the Variable Density Wind Tunnel by Jacobs, Ward and Pinkerton.

Also, Aerodynamic characteristics of a large number of airfoils tested in the variable-density wind tunnel by     Pinkerton and Greenberg.

These are similar to the first report, but older.