He tried not to think about the food's possible sources.

"What did he tell you about his sources of information?"

Federal police officials said they had no information about the money's source or purpose.

The intelligence community could learn little about the source of the information.

There could now be no possible doubt about the source.

There could no longer be any doubt about the source of that need.

And little is known about the source of his wealth.

It turns out American consumers don't really care about the source.

"The history of light was about the source," he said.

But there are not a lot about sources of money and potential conflicts.