It's linked from today. I just downloaded it and am reading through it. 66MB, 232 pages of football goodness. It looks like it was scanned in from typewritten/hand-sketched papers so some spots are difficult to read. Well worth it though if you like the minutae of passing offense. FYI you will have to sign up (free) for to download it, though you can view it without signing up.

1985 Stanford University QB Manual - Bill Walsh- 232 pages