NPR never says.
B: How do you know the Monday interview was NPR’s first mention of the Ruddy info? I.e.: something led to NPR’s interview of Ruddy. NPR wouldn’t interview a conservative friend of Trump’s just for the pleasure. In some venue NPR most likely got the info from Ruddy and released it, and then followed up with an interview.
I believe you are confusing the June 12th PBS interview and the June 9th NPR article.
No, my link does not say the story was first published on the 13th. It says it was last UPDATED on the 13th: ‘CBS NEWS Last Updated Jun 13, 2017 8:59 PM EDT’ Here is the quote that clarifies the source: ‘The interview was first mentioned by Trump friend and Newsmax CEO Chris Ruddy in an interview on PBS’ “NewsHour” Monday evening.’
The CBS article, last updated on June 13th, refers to Chris Ruddy's June 12th comments to PBS.
In the June 12th PBS interview of Chris Ruddy, Ruddy claims that Mueller met with Trump, but he makes no mention of how he knows that the meeting occurred.
In a Newsmax (Chris Ruddy is CEO) article written on June 9th, Newsmax says, that NPR reported, also on June 9th, that Mueller met with WH officials. Newsmax makes no mention of who the NPR sources are.
NPR, in their June 9th article, also makes no mention of who their sources are.
The Dailey Caller on June 13th, also refers to the June 9th NPR interview, and they say that the meeting between the two has only now been confirmed by their own unnamed source.
Various sources have reported that PS Sean Spicer has denied that there ever was such a meeting.
Reading through all of these links rather quickly, what I can conclude is that the origin of the story, that Trump and Mueller held a meeting, are unnamed sources from NPR and the Dailey Caller.
If you see something different, please give me a ping.
I have posted a quote saying Ruddy was the source of the report, along with evidence that in fact NPR did identify their two sources (Ruddy and an unnamed WH official). If you prefer not to believe it, that’s your choice.
...Q Sarah, on Bob Mueller, is there anything you can tell us more about when he came in to interview for the job, what the President was looking at offering him? Was it acting FBI director? Was it actually FBI director? Why didn’t the White House tell us more about that at the time when you did announce other people who were coming in for the director job?
MS. SANDERS: My understanding is he was actually here the day before he was named as a special counsel. In terms of specific job, whether it was acting or permanent, I’m not sure, and I’d have to check and get back to you.
Q But it was a job interview?
MS. SANDERS: That’s my understanding, yes...