Douglas G. Greene  Douglas G. Greene (born September 24,1944) is an American historian, editor, and author. He is the son of Margaret Chindahl Greene and the Reverend George L. Greene, He is married to Sandi Greene with whom he has a son, Eric and a daughter, Katherine, and has an identical twin, David L. Greene, and a younger brother Paul. Greene is Emeritus Professor of History at Old Dominion University, specialising in Tudor and Stuart Britain. He is a Charter Member of The International Wizard of Oz Club, founded in 1957, and he was a frequent contributor to The Baum Bugle. He is co-author of a biography of Oz illustrator W. W. Denslow and co-editor of stories and poems by Oz author Ruth Plumly Thompson. He was co-owner and editor of mystery publisher Crippen & Landru through 2017, continuing as senior editor beginning in 2018, and has edited numerous Mystery fiction collections for both his own and other publishing houses. In 2014, the non-fiction anthology "Mysteries Unlocked: Essays in Honor of Douglas G. Greene" was released to celebrate his 70th birthday, with ten Edgar Award winning or nominated authors among those contributing. Greene's biography "John Dickson Carr: The Man Who Explained Miracles" was nominated in 1996 for the Edgar Award Best Critical / Biographical Work. Books written or edited by Douglas G. Greene: