I suppose this *could* be interpreted as Feedback on MSDN and TechNet Search.....
By doing a Google Search I found that this (in 2006) was available on Codeplex but that it no longer is (as a search on Codeplex of both DWG and (separately) XAML confirmed.)
WSS FAQ sites: WSS 2.0:
http://wssv2faq.mindsharp.com WSS 3.0 and MOSS 2007:
http://wssv3faq.mindsharp.com
Total list of WSS 3.0 and MOSS 2007 Books (including foreign language titles)
http://wssv3faq.mindsharp.com/Lists/v3%20WSS%20FAQ/V%20Books.aspx