Chris Tilling shared a link to Alan Garrow’s website, where he explores the neglected solution to the Synoptic problem which views Matthew as having worked with Mark and Luke. That view will also get a treatment in Robert MacEwen’s forthcoming monograph, Matthean Posteriority: An Exploration of Matthew’s Use of Mark and Luke as a Solution to the Synoptic Problem.See also Mike Kok’s round-up of his treatment of the authorship of the NT Gospels. See too the post at the Sacred Page which asks whether not wanting to be a crank had an impact on scholars adopting the Streeter hypothesis. And the Biblical Scholarship blog on the likely number of surviving eyewitnesses to Jesus after certain amounts of time had passed, which includes a chart from Robert McIver. And Dorothy King, asking about papyrus for sale on eBay.
And let me end by reposting my favorite proposed solution to the Synoptic problem: