North American XB-70 Valkyrie - 7

Of the many futuristic military aircraft concepts created in the 1950s, the North American XB-70 still stands out as the most awe-inspiring.

With its huge, white partially-folding delta wing, its fuselage resembling a striking cobra and its extraordinary performance, it was one of the foremost technological achievements of the 20th century.

Using full colour artwork and rigorous analysis, this is the complete story of the ultimate US Cold War military X-plane.