Warning: This post contains explicit descriptions of alleged sexual assault.

Another woman has accused comedian Bill Cosby of sexual assault. Joan Tarshis, who said she is a publicist and journalist, wrote a detailed account of her alleged encounter with Cosby for the Web site Hollywood Elsewhere.

Her charge, along with others, has not been independently verified.

Cosby’s lawyer has dismissed rape allegations against Cosby as old and “discredited,” and said there would be no further comment on them.

Barbara Bowman says she is "certain" Bill Cosby drugged and raped her when she was a teenaged actor in the 1980s. (Erin O'Connor and McKenna Ewen/The Washington Post)

The encounter Tarshis describes occurred in 1969, she said.

While working for the comedian Godfrey Cambridge, she met Cosby in Los Angeles while he was filming “The Bill Cosby Show,” which aired from 1969 to 1971. She said Cosby introduced her to Sidney Poitier, and gave her the nickname “Midget.”

When Cosby invited her to work on some material in his bungalow and gave her a drink, Tarshis said, she was attacked. “The next thing I remember was coming to on his couch while being undressed,” she wrote. “Through the haze I thought I was being clever when I told him I had an infection and he would catch it and his wife would know he had sex with someone. But he just found another orifice to use. I was sickened by what was happening to me and shocked that this man I had idolized was now raping me. Of course I told no one.”

Later, Tarshis — who wrote that her mother was impressed by her connection to the famous comedian — felt she could not refuse when Cosby asked to see her again.

I was repulsed by the thought of seeing him again, but I saw no way out,” she said. “I couldn’t tell my mother what he had done. Or what I had let happen, feeling the guilt that rape victims often feel.”

She wrote that she was again plied with drinks and drugged. “I remember feeling very, very stoned and asking his chauffeur to take me back to the car,” she wrote. “I was having trouble standing up. The next thing I remember was waking up in his bed back at the Sherry, naked. I remember thinking ‘You old s—, I guess you got me this time, but it’s the last time you’ll ever see me.’”

According to a profile on MediaBistro, Tarshis has written for Reader’s Digest, Men’s Health and RedBook. She has also represented “media clients” such as the Red Hot Chili Peppers and Tina Turner and “corporate clients” such as Andy Kaufman, Bob Marley and Rodney Dangerfield.

“I have worn many hats as a journalist, photographer, biographer, editor, copywriter and publicist,” the profile read. “I have written about everything from soup to nuts – well I’ve written more than about nuts! I have covered health, movie news, technology, travel, TV, music, celebrity features and, oh yes, did I mention – food. My stories have graced the covers of magazines from Parade to Reader’s Digest. I have also written for the teen market.” She said the time is right for her to come forward with Cosby’s other alleged victims.

“I watched Cosby be praised by everyone from Presidents to Oprah to the Jello Corporation,” Tarshis wrote. “It all made me ill, knowing first-hand there was something unbalanced about him. I had heard and/or strongly suspected I was not the only white girl he had drugged and raped but I never had any proof. No one began talking until 2004. And though I knew I should say something, I still felt ashamed. Ashamed that I didn’t earlier.”

Cosby, who refused to discuss allegations of sexual assault with NPR’s Scott Simon in an interview that aired over the weekend, posted a statement on his Web site Sunday. “Over the last several weeks, decade-old, discredited allegations against Mr. Cosby have resurfaced,” a statement posted by John P. Schmitt, Cosby’s lawyer, said. “The fact that they are being repeated does not make them true. Mr. Cosby does not intend to dignify these allegations with any comment. He would like to thank all his fans for the outpouring of support and assure them that, at age 77, he is doing his best work. There will be no further statement from Mr. Cosby or any of his representatives.”

RELATED: “Bill Cosby’s silence further explained by NPR’s Scott Simon

FROM THE VAULT: The sex allegations that ended Cosby’s 2005 tour on personal responsibility