These illustrations come from the Terran Trade Authority Handbook: Spacecraft 2000 to 2100 AD by Stewart Crowley (©1978). I first found this book at some kind of flea market in England in 1982 (I was 9 years old so I can't entirely remember the circumstances). That copy may still be somewhere in my parents house, but I found it again at a garage sale in Buffalo a couple of years ago. As a kid I found the book fascinating and kind of creepy. It's presented as a guide to the spacecraft of the 21st century and details the way they were used in the "Proximian War." It's all pretty silly, but some of the illustrations are amazing, and do succeed in creating an alien atmosphere. The book is illustrated by several different people, the best among them being Angus McKie. The Terran Trade Authority Handbook that addresses alien life forms (which I will get to later in the year), is more ridiculous than this book by several orders of magnitude.