author's true identity being discovered, such as Elena Ferrante and Torsten Krol. A pen name may be shared by different writers in order to suggest continuity of authorship. Thus the Bessie Bunter series of English boarding-school stories, initially written by the prolific Charles Hamilton under the name Hilda Richards, was taken on by other authors who continued to use the same pen-name. In some forms of fiction, the pen name adopted is the name of the lead character, to suggest to the reader that the book is an autobiography of a real person. Daniel Handler used the pseudonym Lemony Snicket to present his A Series of Unfortunate Events books as memoirs by an acquaintance of the main characters. Some, however, do this to fit a certain theme. One example, Pseudonymous Bosch, used his pen name just to expand the theme of secrecy in The Secret Series. Authors also may occasionally choose pen names to appear in more favorable positions in bookshops or libraries, to maximize visibility when placed on shelves that are conventionally arranged alphabetically moving horizontally, then upwards vertically. Female authors Some female authors have used pen names to ensure that their works were accepted by publishers and/or the public. Such is the case of Peru's Clarinda, whose work was published in the early 17th century. More often, women have adopted masculine pen names. This was common in the 19th century, when women were beginning to make inroads into literature but, it was felt, would not be taken as seriously by readers as male authors. For example, Mary Ann Evans wrote under the pen name George Eliot; and Amandine Aurore Lucile Dupin, Baronne Dudevant, used the pseudonym George Sand. Charlotte, Emily and Anne Brontë published under the names Currer, Ellis, and Acton Bell, respectively. French-Savoyard writer and poet Amélie Gex chose to publish as Dian de Jeânna ("John, son of Jane") during the first half of her career. Karen Blixen's very successful Out of Africa (1937) was originally published under the pen name Isak Dinesen. Victoria Benedictsson, a Swedish author of the 19th century, wrote under the name Ernst Ahlgren. The science fiction author Alice B. Sheldon for many years published under the masculine name of James Tiptree, Jr., the discovery of which led to a deep discussion of gender in the genre. More recently, women who write in genres commonly written by men sometimes choose to use initials,