Beverly Pepper in her workshopWhat kind of grit did it take for a woman in the 1960s to create sculptures in steel and iron so totemic they made her contemporaries David Smith and Alexander Calder look timid? And how is it that an artist who preceded Richard Serra in monumental ambition is not better known? These are the questions being asked on the eve of Beverly Pepper’s first exhibition in London at the age of 92. Pepper’s sculptures, like many of t...