"You've got spunk," Lou Grant says to Mary Richards on the very first episode of The Mary Tyler Moore Show. And then he adds, famously, "I hate spunk." The year is 1970, the same year in which Jeannette Walls set her new novel, The Silver Star. In the book, someone tells the 12-year-old narrator, Bean Holladay, that she's got spunk too. Maybe it's no coincidence. 1970, after all, was situated squarely in the middle of second-wave feminism. It was an era when women and girls were asserting themselves and finding their voices, which weren't always met with approval.