Asked whether CBS had taken her concerns seriously, Linda James, a forensic document examiner in Texas, told The Washington Post: ''Evidently not.''

James told ABC that ''I did not authenticate anything and I don't want it understood that I did.''

A second document expert, Emily Will, told ABC News correspondent Brian Ross that she had cautioned CBS in writing that there were ''significant'' problems with the documents, which were used in a ''60 Minutes'' broadcast last Wednesday as evidence that Bush received favorable treatment while he was in the Texas Air National Guard.

''I told them that all the questions I was asking them on Tuesday night, they were going to be asked by hundreds of other document examiners on Thursday if they ran that story,'' Will told ABC. ''I did not feel that they wanted to investigate it very deeply,'' Will said.

When questions about the documents first arose last week, the anchorman Dan Rather said at least four experts had helped convince the network of their authenticity.

But the network has continually declined to provide the name of more than one of those experts.

That one, Marcel Matley, said in interviews that he validated only that the signature on the documents was Killian's.

But, he said, he did not vouch for the documents themselves and could not rule out that the signature had been cut and pasted onto the records from known documents of Killian.

CBS News Senior Vice President Betsy West said Tuesday night: ''As far as I know, Linda James raised no objections. She said she'd have to see more documents to render a judgment.''

As for Will's account, West said: ''I'm not aware of any substantive objection she raised."

The New York Times reported today that the secretary for the squadron commander purported to be the author of the memos said Tuesday that she never typed the documents and believed they were fakes.

But Marian Carr Knox also said they accurately reflected the thoughts of the commander, Lt. Col. Jerry B. Killian, and other memorandums she typed for him about Bush.

"It is notable that [Knox] confirms the content of the documents, which was the primary focus of our story in the first place.'' said CBS's Sandy Genelius on Tuesday.