It's not quite pro bono, but he is offering a weekly column to California newspapers.
For Campbell's part, he has received endorsements from the editorial boards of ten California newspapers.
Instead, he worked as an investigative journalist for southern California newspapers and at a radio station.
Other California newspapers also embraced this view.
Some, he figured, would deduce his identity from the photographs of him published in various California newspapers.
It reminds me of a headline that appeared in a California newspaper just before I flew here.
Officials said a substance that a California newspaper described as missile fuel residue was probably glue from the seats.
A woman called who said she was from a southern California newspaper and had a great idea for a human interest story.
Full-page advertisements promoting the party appeared in more than three dozen California newspapers this morning, reaching an estimated six million households.
California newspapers had been exempt from any sales taxes since 1945.