Come celebrate the birthday of Frankenstein author Mary Shelley with the New England members of the Broad Universe Writers Group at Back Pages Books .  Part of a weekend of birthday events, the Back Pages party will feature several local female genre authors, including vampire fiction authors Inanna Arthen and Morven Westfield, past Nebula Award nominee and Waltham author Jennifer Pelland, fantasy author Elaine Isaak, and Julie Andrews.  Trisha J. Wooldridge, author, journalist and educator, will offer brief talks about Shelley's themes and influence, and Phoebe Wray, a member of Broad Universe's governing body, will present highlights from the author's life.  All the authors will be reading in a rapid-fire format from their poetry, stories and novels.  The party will feature an introduction to Shelley's life and works, including a discussion of her most famous work Frankenstein, or The Modern Prometheus.  Broad Universe is an international organization supporting women writers of science fiction, fantasy, and horror, which honors Shelley, author of the first science fiction novel, as their patroness.  When she was just 18 years old, Shelley started writing Frankenstein, spurred by a challenge from Lord Byron to craft a supernatural tale all her own. The work first appeared in print anonymously in 1818, and remains in print to this day.  It has also spawned dozens of movie adaptations, as well as countless derivative works that take Frankenstein's monster to places that Shelley likely never imagined.