This Witch

Arthur Wilson "Bob" Tucker (1914–2006) was an American mystery, action adventure, and science fiction writer, who wrote professionally as Wilson Tucker.

He was also a prominent member of science fiction fandom, who wrote extensively for fanzines under the name Bob Tucker, a family nickname bestowed in childhood (his pronunciation corruption as a child of the actual nickname "Bub"). He became a prominent analyst and critic of the field, as well as the coiner of such terms as "space opera".