In 1986, which Procter & Gamble cleansing powder offered a free guide to a famous celestial visitor returning that year?

In 1981, James G. Nourse hit the bestseller list with "The Simple Solution to..." which puzzle? In 1984, which Democrat won election to the U.S. Senate from Tennessee, succeeding Howard Baker? In 1984, with $1,000 and a dream, who founded a computer company later named for himself? In 1984, women in Liechtenstein were given which right in national elections for the first time? In 1987, a mile-long garbage slick was spotted off Monmouth County in which state? In 1987, Jim Abbott became the first athlete in which sport to win the Sullivan Award as the top U.S. amateur? Which magazine has given its famous "Seal" of approval to products since 1909? In 1989, which actor starred in one of the three "New York Stories" and as one of the "Three Fugitives"?