Another accuser has come forward with claims against billionaire pedophile Jeffrey Epstein alleging that he sexually assaulted her in 1996, when she was 26 years old, and molested her then 15-year-old sister.

Documents filed Tuesday in Manhattan federal court by accuser Maria Farmer allege that Epstein hired her in 1995 when she was an art student in New York City to help him purchase works of art but that she was also tasked with manning the door of his Upper East Side mansion to note who came and went.

While working in the position, Farmer claims, she witnessed a “number of school age girls coming to the home.”

Farmer claims that Epstein and his British socialite pal Ghislane Maxwell took an interest in her 15-year-old sister and flew her with them to their ranch in New Mexico, where they ordered her to take off her clothes and then touched her inappropriately.

“To my knowledge, I was the first person to report Maxwell and Epstein to the FBI. It took a significant amount of bravery for me to make that call because I knew how incredibly powerful and influential both Epstein and Maxwell were, particularly in the art community,” she wrote in the affidavit.

Farmer also alleges that while she was working at a mansion in Ohio in the summer of 1996 Epstein and Maxwell visited and sexually assaulted her.

The documents were filed as exhibits in Virginia Roberts Giuffre’s defamation lawsuit against prominent attorney Alan Dershowitz. Giuffre alleges that for two years starting in 2000, when she was 16 years old, she was a victim of sex trafficking scheme run by Epstein.

Giuffre says Epstein repeatedly abused and forced to have sex with Dershowitz at Epstein’s mansion on East 71st Street in Manhattan as well as with other older men.

Dershowitz has long denied Giuffre’s claims and has publicly said he wants to go to trial so that he can clear his name. He has also argued in court papers submitted to a federal appeals court in Manhattan that documents from Giuffre’s defamation suit against Maxwell should be made public.

Dershowitz told The Post Tuesday that Giuffre’s suit is “what I’ve been waiting for” and that he has obtained emails showing that she is lying about having sex with the 80-year-old appeals expert and law professor. He predicted she would end up committing perjury by sticking with her allegations.

“She’s totally made up this story, completely out of whole cloth,” Dershowitz said.

Epstein, a former Wall Street financier, was convicted in 2008 of soliciting an underage girl for sex. He served 13 months of an 18-month jail sentence and was required to register as a Level 3 sex offender.