She may be a witness, and her testimony does not need corroboration.

But, he said, it was only one survey which would need corroboration over time by other such surveys.

Mr. Newton's testimony would need corroboration.

I still need corroboration to believe that Memel really happened and is not the fantasy of a spell of madness.

That will explain to you my exact meaning, and if you need corroboration you can go to Max Wyndham for it.

The lady's story certainly seems to be corroborated, if it needed corroboration, by every detail which we see before us.