Media Matters has raised millions of dollars from major liberal foundations since its inception, benefiting from heavyweight organizations like the Tides Foundation and George Soros' Open Society Institute. 

A report Friday in The Daily Caller detailed the sources of about $29 million in Media Matters donations dating back to 2003. Though much of the group's finances are secret, the $29 million represents more than half of Media Matters' total funding in that time. 

The liberal Tides Foundation accounted for $4.38 million of the sum. According to the Caller, more than half of that contribution was in place before the Media Matters launch in 2004. The Open Society Institute also donated more than $1 million, in installments over three years. 

Funding for the liberal media advocacy group comes from dozens of other organizations. Among them, according to the report, are the anti-war, the Barbra Streisand Foundation, the Ford Foundation and the Joyce Foundation. President Obama sat on the board of the latter until 2002. 

According to the Caller, Media Matters has received nearly $1 million from the Ford Foundation since 2010 -- even though the group reportedly was planning to run an ad against Ford as part of its campaign against Fox Business Network host Lou Dobbs when he was with CNN, because Ford was advertising on his show. 

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Though Media Matters does not report its donors, the information in the article came from the records of some of the foundations that donated to them.