Federations by John Joseph Adams and Doug Beason and Jeremiah Tolbert and S.L. Gilbow and K. Tempest Bradford and George R.R. Martin and Orson Scott Card and Robert J. Sawyer and John C. Wright and Lois McMaster Bujold and Georgina Li and Genevieve Valentine and Catherynne M. Valente and Trent Hergenrader and Harry Turtledove and Alastair Reynolds and Alan Dean Foster and George Guthridge and James Alan Gardner and Yoon Ha Lee and Allen M. Steele and Mary Rosenblum and Robert Silverberg and Anne McCaffrey and Kevin J. Anderson and L.E. Modesitt Jr.