Comedian Bill Cosby, 77, admitted in a court back in 2005 that he intended to give drugs to young women with whom he wanted to have sex.
The unsealed files obtained by the Associated Press news agency show that Cosby accepted the accusations in 2005. However the case was settled for an undisclosed sum in 2006.
Best known as Dr Cliff Huxtable on The Cosby Show in 1984-92, the comedian is still facing a number of allegations dating back to the 1970s, but he has denied the claims.
Cosby has never been criminally charged.
According to the court papers, Cosby was asked by attorney Dolores Troiani: "When you got the quaaludes, was it in your mind that you were going to use these quaaludes for young women that you wanted to have sex with?"
Cosby answered in the positive.
The attorney then asked: "Did you ever give any of those young women the quaaludes without their knowledge?" At that point, Cosby's lawyer objected, stopping his client from answering.
Cosby then clarified an earlier remark saying that he had misunderstood.
He'd said he gave quaaludes to other people, and he later said: "I misunderstood. Woman ... not women."
The documents include Cosby's recollection of an incident in Las Vegas in the 1970s. He said "She meets me backstage. I give her quaaludes. We then have sex."
Cosby has recently described the accusations as "fantastical" and "uncorroborated." However, his stand-up shows are still called off and some TV projects have been cancelled because of the incidents.
Cosby's representatives have not made any comments yet.