this moment in late december, 2016, where ellen goes to her mailbox and pulls out what she expects to be usual junk mail and there's an envelope with a charlie brown stamp on and she pulled it out and it's a letter typed, no name, no return address-- address that lays out all these concerns that this individual has with things happening in the trump transition, mostly about russia and some about michael flynn. it-- as much as that document penned out over time it was not a source document for us. it was not anything in and of itself that we could rely on to build stories around. we could treated as a reporting map to pursue things, but we don't know who that is spirit we don't know if it's really still have no idea who sent that to us here we've never been able to figure that out here we ran down a bunch of suspicions, never able to just-- discern who that was. >> maybe it's the person who wrote the anonymous op-ed. >> it falls into the category of astonishing things that have happened over the past year. it was only a few months after that i started getting from a source or sources transcripts of the president's phone calls with the leader of mex