Published in 1980, this book contains lots of cool examples of design progression. As a budding artist, it was my invaluable first example of how ideas can change over time, and how your first rendering of a concept isn't always your best (and in some cases, what ends up as the final product isn't as cool as some of the preliminary ideas). For example, I prefer the helmet on this snow trooper.
Wait! I lied. The Slave I was my favorite...until I found out it didn't fly in the same way that it docked (I've rotated the picture to how I thought it would fly). Rumored(?) to be based upon the shape of a streetlamp, this was another great lesson in art: Inspiration for design may be found anywhere.
In decent shape for a well read 32 year old book.