If you ever grew up during the mid 70s and into the 80s, this book is an excellent reference material for building SciFi popular TV series and movie models and the real thing. I gave my first book that I brought back in 1979 for $5.00 to my. Now it is worth twice as much. I brought another one at a decent price. The used book has no wear and tear on it or have any writings or highlighting as well. When I am gone...I hope that it will be passed on to my grandkids.