Hillary Clinton described Monica Lewinsky as a “narcissistic loony toon” in a private chat with her best pal – and even blamed herself in part for Bill’s philandering ways, according to newly revealed documents.

The papers include correspondence, journal entries, memos and interviews from the mid-1970s to about 2000 belonging to Clinton’s friend and confidant Diane Blair, a political science professor who died in 2000.

After it was reported that President Clinton had Oval Office trysts with Lewinsky, Hillary angrily told Blair the young intern was a nut case – and blamed the affair on politics, the loneliness of the presidency and her own failures as a wife.

“She thinks she was not smart enough, not sensitive enough, not free enough of her own concerns and struggles to realize the price he was paying,” Blair wrote.

“[Hillary] is not trying to excuse [Bill Clinton]; it was a huge personal lapse. And she is not taking responsibility for it,” she wrote.

“But, she does say this to put his actions in context. Ever since he took office they’ve been going thru personal tragedy ([the death of] Vince [Foster], her dad, his mom) and immediately all the ugly forces started making up hateful things about them, pounding on them,” she wrote.

“They adopted strategy, public strategy, of acting as tho it didn’t bother them; had to. [Hillary] didn’t realize toll it was taking on him,” Blair continued.

When Clinton finally admitted to the affair after repeatedly lying that he did not have sex with “that woman, Miss Lewinsky,” Hillary defended her philandering spouse in a phone chat with Blair.

“HRC insists, no matter what people say, it was gross inappropriate behavior but it was consensual (was not a power relationship) and was not sex within any real meaning (standup, liedown, oral, etc.) of the term.”

While the papers have been open to the public at the University of Arkansas library since 2010, The Washington Free Beacon published them for the first time Sunday night.

The first lady gave Bubba credit for trying to cut off the affair with Lewinsky, and insisted he did not take advantage of the young intern.

“It was a lapse, but she says to his credit he tried to break it off, tried to pull away, tried to manage someone who was clearly a ‘narcissistic loony toon’; but it was beyond control,” wrote Blair, whose husband, Jim Blair, was a former chief counsel at Tyson Foods and a Clinton confidant.

Hillary told Blair she spoke with an expert on sexual infidelity, who told her that Bill’s philandering was a result of his childhood, when his mother and grandmother fought over his custody.

Jim Blair was in the middle of the controversy surrounding 1994’s “Cattlegate,” in which Hillary Clinton made a bundle while trading cattle futures.

Blair donated his wife’s papers to the University of Arkansas after she died.

Monica wasn’t the only woman in Hillary’s crosshairs.

In a December 1993 diary entry, Blair recalled a conversation she had with Hillary about ex-Sen. Robert Packwood, who was then embroiled in a sexual harassment scandal.

“HC tired of all those whiney women, and she needs him on health care,” Blair wrote, referring to Packwood’s possible support for her health care reform effort. “I told her I’d been bonding w. creeps; she said that was the story of her whole past year.”

Blair also referred to the “Fabio incident—sweeping her up, sending her roses,” when the hunky, flaxen-haired Italian model embraced Hillary in a romantic hug at the 1993 National Italian American Foundation dinner.

Gennifer Flowers – another woman Clinton admitted to having an affair with – was also on Hillary’s radar.

In a February 1992 memo entitled “Possible Investigation Needs,” Clinton operatives plotted ways to discredit spreading stories about the horndog Arkansas governor’s love life.

One item discussed was “GF,” a reference to Flowers, the blonde model who had just claimed a 12-year affair with Bill.

“Exposing GF: completely as a fraud, liar and possible criminal to stop this story and related stories, prevent future non-related stories and expose press inaction and manipulation,” the memo said.

Clinton later admitted he had bedded Flowers.

The first lady also confided her surprisingly “upbeat” attitude after Clinton’s impeachment by the House in 1998.

“[Hillary] sounded very up, almost jolly,” wrote Blair. “Told me how she and Bill and Chelsea had been to church, to a Chinese restaurant, to a Shakespeare play, greeted everywhere with wild applause and cheers—this, she said is what drives their adversaries totally nuts, that they don’t bend, do not appear to be suffering.”

Hillary also had some harsh words for her many “adversaries,” which included predictable targets such as the press and GOP opponents – but also members of the president’s own staff.

“HC says press has big egos and no brains,” Blair wrote in May 1993, a time she was heavily criticized for the ham-handed firing of veteran White House travel office staff.

“[Hillary said] that [the White House is] just going to have to work them better; that her staff has figured it out and would be glad to teach [Bill’s] staff.”

The First Lady , according to Blair, was “furious” at Bill for “ruining himself and the Presidency” by 1994.

“She keeps trying to shape things up, knows what’s wrong, but [Bill] can’t fire people, exert discipline, punish leakers,” Blair wrote that May. “Never had strategy for Whitewater, troopers, Paula [Jones]. … Inability to organize, make tough choices, drives her nuts.”

Blair, a frequent White House guest, also expressed her own sympathy for the president.

“[Bill] told me last 2, 3 months hideously stressful, and has really never had a break since campaign,” Blair wrote. “Said when he named [Warren] Christopher to [State Department], screwed up the transition.”

The papers also shed light on Hillary’s ultimately disastrous effort to reform the US health care system in the early 90s.

At a February 1993 White House dinner, Hillary argued with Bill that a single-payer system was necessary to fix health care – contradicting her stated public position at the time.

“At dinner, [Hillary] to [Bill] at length on the complexities of health care—thinks managed competition a crock; single-payer necessary; maybe add to Medicare,” Blair wrote.

Hillary had only recently been named to head up the effort, but already seemed to be having second thoughts, Blair wrote.

“[Bill’s] tenderly hugging and thanking [Hillary] for sucking up to all thos ego’s nd taking all this sh-t [sic],” wrote Blair. “She’s signaling him what a mess health care is, bu also, sweetly, ‘Don’t worry’ [sic].”

Months later, the effort had descended into chaos, Blair wrote.

“[Hillary] adamant; [Bill] must devise new outside strategy; we’re getting killed. Congress a bunch of whiners; no courage. Her health care plan will save billions in long run but will cost big $ up front. [Members of Congress] don’t work; only 3 days a week; only care for re-election,” wrote Blair. “[Bill] clearly not very happy w. his own crew and advisors. [Hillary] urging hard ball.”

Hillary was also skeptical of her husband’s decision to intervene militarily in the Bosnian genocide.

The first lady, according to Blair’s April 1993 memo, said she “was very much against any intervention — [they] had been killing each other for 900 yrs.”

The US finally intervened two years later.

Despite her opposition then, Hillary has said more recently that she backed earlier intervention in the Balkans, decrying “the tragic failures in Rwanda, early Bosnia, and up to now, the inadequate response in Darfur” in a speech to the UN in 2005.

Other disclosures in the papers show that Team Clinton worried about voters finding Hillary too “ruthless” – even though they liked Bill.

In May 1992, Clinton pollster Stan Greenberg issued a confidential memo titled “Research on Hillary Clinton.”

Voters admired Arkansas’ first couple, but, “what voters find slick in Bill Clinton, they find ruthless in Hillary.”

As Hillary gears up for a potential run for the presidency in 2016, critics are expected to dredge up issues from her past, from the Arkansas Governor’s Mansion to the White House, US Senate and State Department.