sentences:  Ælfwold's will is still extant, and the hand drawing up the will matches the hand that drew up a charter of 997 from King Æthelred II to Ælfwold.In his will, Ælfwold freed all the slaves that had worked on his estates, suggesting the existence of slavery in Anglo-Saxon England, was tempered by the need to free such slaves on death.A Gun for Dinosaur
  
  "A Gun for Dinosaur" is a time travel science fiction story by American writer L. Sprague de Camp as part of his Rivers of Time series.