Robinson, Spider,
--The Guy with the Eyes, 1973. (Analog, February, 1973.)
--The Time-Traveler, 1974. (novelette) (Analog, April, 1974.)
--The Centipede's Dilemma, 1977. (original)
--Two Heads Are Better Than One, 1975. (Analog, May, 1975.)
--The Law of Conservation of Pain, 1974. (Vertex, December, 1974.)
--Just Dessert, 1977. (original)
--"A Voice Is Head in Ramah ...," 1975. (Analog, November, 1975.)
--Unnatural Causes, 1975. (novelette) (Analog, October, 1975.)
--The Wonderful Conspiracy, 1977. (original)