THIS IS SAD: Ralph Luker, pioneer history blogger, has passed away at age 75. “Ralph taught American history at a number of schools and was the author of numerous studies. He also edited two volumes of the Martin Luther King Jr. Papers. Many of you, however, know Ralph from his days at History News Network’s Cliopatria blog. Our paths crossed almost immediately after I started blogging back in 2005. Even at that early stage Ralph was already promoting history blogging and bloggers.”