By Hanff, Helene 84, Charing Cross Road is a charming record of bibliophilia, cultural difference, and imaginative sympathy. For 20 years, an outspoken New York writer and a rather more restrained London bookseller carried on an increasingly touching correspondence. In her first letter to Marks & Co., Helene Hanff encloses a wish list, but warns, "The phrase 'antiquarian booksellers' scares me somewhat, as I equate 'antique' with expensive." Twenty days later, on October 25, 1949, a correspondent identified only as FPD let Hanff know that works by Hazlitt and Robert Louis Stevenson would be coming under separate cover. When they arrive, Hanff is ecstatic--but unsure she'll ever conquer "bilingual arithmetic." By early December 1949, Hanff is suddenly worried that the six-pound ham she's sent off to augment British rations will arrive in a kosher office. But only when FPD turns out to have an actual name, Frank Doel, does the real fun begin