Gents. I have a small library which is constantly being upgraded. I am growing a bit weary of some of the "my document / book is more definitive" sort of comments in the BBS. I have seen scans of performance charts from WWII as well as performance citations from mass produced books. Which is correct? I would ask some of our more noble professors of aviation to list their top 5-10 sources for aviation data. I do believe that some of the "that's impossible" comments can be avoided with a bit of education. Also, as a scale RC enthusiast, I do build from pics and 3 ways on obscure planes, so also, would be great help there as well. Thanks.