I have a piece on his passing over at the Los Angeles Times site.
I should note an addendum here: I was in the audience at the 2006 Hugos when Harlan groped Connie Willis, and laughed because I thought it was a set piece between them. I later learned it was not and was embarrassed I had laughed. I have a pretty good idea why Harlan did it and why he thought it was harmless, but he was wrong to have done it and deserved the anger sent his way for it. I liked talking to him and admired his work immensely, and appreciated the complicated human he was. I just wish the first time I had seen him in person, he hadn’t have humiliated a colleague, a woman and a great writer. It stays with me even now.