A useful companion to things like this about the use of intelligence before the war is Iraq on the Record, a database of 237 pre-war statements by Administration officials that they should have known were misleading at the very time they were saying them. For example, search for say, "Cheney" and "trailers" and you get this quote:

Public Statement of Vice President Richard Cheney: "In terms of the question what is there now, we know for example that prior to our going in that he had spent time and effort acquiring mobile biological weapons labs, and we're quite confident he did, in fact, have such a program. We've found a couple of semi trailers at this point which we believe were, in fact, part of that program." Source: Morning Edition, NPR (1/22/2004)

And a short explanation of how he should have known that what he was saying was misleading:

Why This Statement is Misleading: This statement was misleading because it claimed the purpose of the trailers was to produce biological weapons without disclosing that engineers from the Defense Intelligence Agency who examined the trailers concluded that they were most likely used to produce hydrogen for artillery weather balloons.

I might be biased and in hindsight it would have been great if the quotes and statements were linked to original sources, but I still find it a valuable resource.