Unavoidably delayed, but now available: "Lippisch and Messerschmitt Supersonic Projects” and “Focke Wulf Advanced Fighters.” These are, IMO, the two best in the series.
Available for PayPal purchase here:
http://up-ship.com/blog/?p=3420
Available for PayPal purchase here:
http://up-ship.com/blog/?p=3420