On 12/3/2016 8:14 PM, David Christ wrote: > Depends on how close to how they turned out you need it to be. > > There is a book “Inherit the stars” <https://www.amazon.com/Inherit-Stars-James-P-Hogan/dp/0345257049/> -- Jeff-1.0 wa6fwi http://www.foxsmercantile.com