Richard Jones at Soft Machines has posted a nice list of nanotechnology books on his shelf, in the order in which they were published:

Engines of Creation , by K. Eric Drexler (1986).

Nanosystems: Molecular Machinery, Manufacturing, and Computation , by K. Eric Drexler (1992).

Molecular Devices and Machines : A Journey into the Nanoworld , by Vincenzo Balzani, Alberto Credi and Margherita Venturi (2003).

Bionanotechnology : Lessons from Nature , by David Goodsell (2004).

Soft Machines : Nanotechnology and Life , by Richard Jones (2004).

Nanotechnology and Homeland Security: New Weapons for New Wars , by Daniel and Mark Ratner (2004).

Nanoscale Science and Technology , eds Rob Kelsall, Ian Hamley and Mark Geoghegan (2005).

Nanofuture: What's Next For Nanotechnology , by J. Storrs Hall (2005).

Nano-Hype: The Truth Behind the Nanotechnology Buzz , by David Berube (2006).

The Dance of Molecules : How Nanotechnology is Changing Our Lives , by Ted Sargent (2006).

The Nanotech Pioneers : Where Are They Taking Us? , by Steve Edwards (2006).

More details are available at Soft Machines.