first three months of release, and, by 1975, Publishers Weekly had reported that the "Avon originals" had sold a combined 8 million copies. The following year over 150 historical romance novels, many of them paperback originals, were published, selling over 40 million copies. Unlike Woodiwiss, Rogers's novels featured couples who travelled the world, usually were separated for a time, and had multiple partners within the book. The success of these novels prompted a new style of writing romance, concentrating primarily on historical fiction tracking the monogamous relationship between a helpless heroines and the hero who rescued her, even if he had been the one to place her in danger. The covers of these novels tended to feature scantily clad women being grabbed by the hero, and caused the novels to be referred to as "bodice-rippers." A Wall St. Journal article in 1980 referred to these bodice rippers as "publishing's answer to the Big Mac: They are juicy, cheap, predictable, and devoured in stupifying quantities by legions of loyal fans." The term bodice-ripper is now considered offensive to many in the romance industry. In this new style of historical romance, heroines were independent and strong-willed and were often paired with heroes who evolved into caring and compassionate men who truly admired the women they loved. This was in contrast to the contemporary romances published during this time, which were often characterized by weak females who fell in love with overbearing alpha males. Although these heroines had active roles in the plot, they were "passive in relationships with the heroes", Across the genre, heroines during this time were usually aged 16–21, with the heroes slightly older, usually around 30. The women were virgins, while the men were not, and both members of the couple were described as beautiful. In the late 1980s, historical romance dominated the romance genre. The most popular of the historical romances were those that featured warriors, knights, pirates, and cowboys. In the 1990s the genre began to focus more on humor, as Julie Garwood began introducing humorous elements and characters into her historical romances. Market Historical romance novels are rarely published in hardcover, with fewer than 15 receiving that status each year. The contemporary market usually sees 4 to 5 times that many hardcovers. Because historical romances are primarily published in mass-market format, their fortunes are tied to a certain extent to the mass-market trends. Booksellers and large