1/12/2017 - Multiple people vouch for his credibility. Source
1/12/2017 – Steele is in hiding following the Dossier leak. Source
2/28/2017 - FBI had once planned to pay former spy who authored the Dossier. Source
2/28/2017 – CNN does a follow-up story to the above. “The FBI reimbursed some expenses of the former British intelligence operative who produced a dossier containing allegations of President Donald Trump’s ties to Russia, people familiar with the matter said.” Source
3/2/2017- ** US Senate requests Steele to give evidence on Trump Dossier. **Source
3/7/2017 – Steele appears to return to work at Orbis with an extremely scripted statement. Source
3/7/2017 - Schiff seeks Trump dossier author testimony, claims he will go to him if he must. Source
3/29/2017 - The Senate Intelligence Committee is in talks to interview Christopher Steele, the former British intelligence operative who compiled the dossier that alleges a conspiracy between the Trump campaign and Russia. Source
3/29/2017 - But last June, Steele began sending pages of what would later be called his dossier.In light of his earlier work, the US intelligence community saw him as “credible” (their highest praise)the FBI thought the same; they had worked with Steele going back to his days in MI6. He flew to Rome in August to talk to the FBI. Then in early October, he came to the US and was extensively debriefed by them, over a week. He gave the FBI the names of some of his informants, the so-called “key” to the dossier." Source
4/28/2017 - The UK government was given details last December of allegedly extensive contacts between the Trump campaign and Moscow by Christopher Steele. Source
51.2. General
12/26/2016 - Former Russian FSB agent, Rosneft official found dead in Moscow. He is believed to be one of the primary Dossier sources. He was killed before the Dossier was made “Public” Source
1/11/2017 - Trump Dossier leaks. He’s possibly being blackmailed. Source
1/11/2017 - You can read the actual Dossier yourself here: Source Text version: Source
1/11/2017 - Dossier claims possible brokerage of 19% share of Rosneft and not long after 19% is sold to a currently unknown party. Source
1/12/2017 - There are up to 4 additional source corroborating parts of the Dossier according to BBC’s Paul Wood.Source
1/12/2017 - Later, I used an intermediary to pass some questions to active duty CIA officers dealing with the case file - they would not speak to me directly. I got a message back that there was “more than one tape”, “audio and video”, on “more than one date”, in “more than one place” - in the Ritz-Carlton in Moscow and also in St Petersburg - and that the material was “of a sexual nature”. Source
2/10/2017 - Multiple Source have confirmed some of the conversations between Russian officials occurred on the same days in the same locations as described. "Some of the individuals involved in the intercepted communications were known to the US intelligence community as “heavily involved” in collecting information damaging to Hillary Clinton and helpful to Donald Trump, two of the officials tell CNN. Source
2/24/2017- They are continuing to chase down stuff from the dossier, and, at its core, a lot of it is bearing out," an intelligence official said” Source
3/6/2017 – James Clapper states Trump asked him to refute the Dossier. Clapper also confirms Putin’s distaste for Clinton but says they had not tracked down everything due to the sources and will not say any more in regards to the Dossier. Source
3/7/2017 – Maddow report on bits of the Dossier that are confirmed.Source
3/23/2017 - CBS News has learned that some members of Congress want former British spy Christopher Steele to testify before the House Intelligence Committee Source
4/18/2017 - The FBI last year used The Steele dossier as part of the justification to win approval to secretly monitor a Trump associate Carter Page. Source
4/20/2017 - A twice-convicted Russian pedophile imprisoned in a heavily forested gulag some 500 miles from Moscow appears to be the man a controversial dossier says helped hack into Democratic National Committee computers last year. Source
51.3. Doubt of the Dossier’s legitimacy
1/11/2017 – On Wednesday, a US government source told CNN’s Jake Tapper that a different Michael Cohen, not Trump’s lawyer, was in Prague in August and September 2016. Source
1/13/2017 - “The Trump dossier is fake and here are the reasons why” Source