Brian Thomsen was a founding editor of the Questar Science Fiction line of books, and served as managing fiction editor at TSR, Inc.; he also wrote over 30 short stories, and collaborated with Julius Schwartz on Schwartz's autobiography. He also worked as the publisher for TSR's Periodicals Department at one point. He was a consulting editor at Tor Books; as an author he was a Hugo Award nominee.
He died on September 21, 2008, at his home in Brooklyn at the age of 49. He was survived by his wife, Donna.
I liked the "Memoirs and Chronicles" section better than the "Tales Told and Stories Spun" section. Unfortunately, the book was mostly the "Tales Told" section.