A K Street firm led by a former Republican appropriator is not a donor to the Center for American Progress (CAP).

{mosads}The liberal think tank had listed the Livingston Group among its 2013 donors last week, but a spokeswoman for the firm said Anglo American — a British mining company and Livingston client — was the one to make a contribution to CAP.

“We didn’t make the contribution. The contribution was made by a client of ours. We were the interlocutor. That’s all. It was an honest mistake,” said the Livingston Group spokeswoman.

Andrea Purse, a CAP spokeswoman, said the think tank’s donor list has been corrected online.

Livingston Group is known for its Republican ties, with former House Appropriations Committee Chairman Bob Livingston (R-La.) as a founding partner for the firm. The shop does have a bipartisan team with several Democrats on staff.

Livingston Group has earned $190,000 in lobbying fees so far this year from Anglo American, according to disclosure records.

Several lobby and public relations firms have donated to CAP this year. Many are well-connected in the Democratic Party, including Blue Engine Message & Media, the Dewey Square Group and the Glover Park Group.

The think tank is considered close to the Obama administration. John Podesta, its outgoing chairman, is joining the White House as a senior counselor to President Obama.

CAP has become a fundraising force in Washington. The think tank reported holding more than $42 million in net assets on its 2012 tax form and has asked corporations to give up to $250,000 to be a CAP “patron,” according to documents obtained by The Hill.