now butcher that's just not nice. I know some of u SOBs have primary source and google doesn't.
Really is no such thing as a primary source.. Problem with the internet is people list whatever information they have, without giving credit - often stealing it from other place which can lead to false information. "Hey this guy says B-17s flew at 400mph, lets use that!"
Before I got all my books, this is how I did it: You look at 3-4 websites/sources then best judge what looks to be honest the best answer. If 2 give the same answer, and 2 are completely OFF - you can take the two and ask here.
If you ever need I can always shoot you some books, most are free on the internet, you just gotta do some browsing for PDF files.