Spin Gold [1965] ｜ ｜ ｜―Two Spins [1976] ｜ ｜ ｜―Gold Cannon [1980] ｜ ｜ ｜―Spin a Fib [1988] ｜ ｜ ｜―Spindle [1994] ｜ ｜―Soft Reply [1977]