Did you try the Internet Archives for the B26.com site here?
http://web.archive.org/web/201106100...er/pdf/142.pdf
Also, I believe, it can be found here on the B26.com site. Looking at how the page is referenced, it is probably possible to "guess" the addresses for the other "missing" missions.
http://b26.com/historian/chester_klier/pdf/142.pdf