 DuPont stipulated several topics would be taboo on the show, such as gunfire of any kind, which attracted writers such as Norman Rosten and Arthur Miller, who had signed the Oxford Pledge while at University of Michigan.For scripts, the program was also able to attract such prominent writers as Maxwell Anderson, Stephen Vincent Benét, Carl Sandburg and Robert Sherwood.Although Yale University historian Frank Monaghan signed on as an advisor to ensure historically accuracy of the scripts, listeners were quick to point out anachronisms; trains did not use air brakes in 1860 and Washington's troops could not have sung "Tannenbaum" while crossing the Delaware since it was written two months after that event.