Comey was their lawyer when they were fighting the Whitewater case. I believe it was the Whitewater files that were lost in the curious fire in LR.
After law school, Comey was a law clerk for United States District Judge John M. Walker Jr. in Manhattan. Then, he was an associate for Gibson, Dunn & Crutcher in their New York office. He joined the U.S. Attorney's Office for the Southern District of New York, where he worked from 1987 to 1993. While there, he was Deputy Chief of the Criminal Division and helped prosecute the Gambino crime family. . .From 1996 to 2001, Comey was Managing Assistant U.S. Attorney in charge of the Richmond Division of the United States Attorney for the Eastern District of Virginia.[12] In 1996, Comey acted as deputy special counsel to the Senate Whitewater Committee.[33] He also was the lead prosecutor in the case concerning the 1996 Khobar Towers bombing in Saudi Arabia.[34] While in Richmond, Comey was an Adjunct Professor of Law at the University of Richmond School of Law.
I noticed there was a gap in the above source in his history from 1993 to 1996. During this time he practiced private law at McGuireWoods:
In 1993 he moved to Virginia and became a partner in the McGuireWoods law firm. Returning to government service, Comey became an assistant U.S. attorney for the Eastern District of Virginia in 1996.
1993 - Hired by private law firm McGuire Woods.
1996 - Partner at McGuire Woods, specializing in criminal defense and commercial litigation.
Who is new FBI Director James Comey?
He was a partner at firm McGuireWoods, where, among other things, he successfully defended a company against claims its machinery had caused asbestos-related injuries.
He went from there to the Whitewater Committee, which he leveraged to advance his career:
Inside the FBI Investigation of Hillary Clinton's E-Mail
Comey’s first brush with them came when Bill Clinton was president. Looking to get back into government after a stint in private practice, Comey signed on as deputy special counsel to the Senate Whitewater Committee. In 1996, after months of work, Comey came to some damning conclusions: Hillary Clinton was personally involved in mishandling documents and had ordered others to block investigators as they pursued their case. Worse, her behavior fit into a pattern of concealment: she and her husband had tried to hide their roles in two other matters under investigation by law enforcement. Taken together, the interference by White House officials, which included destruction of documents, amounted to “far more than just aggressive lawyering or political naiveté,” Comey and his fellow investigators concluded. It constituted “a highly improper pattern of deliberate misconduct.”
Comey parlayed the Whitewater job into top posts in Virginia and New York, returning to Manhattan in 2002 to be the top federal prosecutor there. One of his first cases as a line attorney in the same office 15 years earlier had been the successful prosecution of Marc Rich, a wealthy international financier, for tax evasion. But on his last day as President in 2001, Bill Clinton pardoned Rich. “I was stunned,” Comey later told Congress. As top U.S. prosecutor in New York in 2002, appointed by George W. Bush, Comey inherited the criminal probe into the Rich pardon and 175 others Clinton had made at the 11th hour.
Despite evidence that several pardon recipients, including Rich, had connections to donations to Bill Clinton’s presidential library and Hillary Clinton’s 2000 Senate campaign, Comey found no criminal wrongdoing. He was careful not to let the investigation be used for political purposes by either party. When pressed for details in one case, he said, “I can’t really go into it because it was an investigation that didn’t result in charges. That may be a frustrating answer, but that’s the one I’m compelled to give.”