CBS refuses to reveal which scholars or authorities on Ronald Reagan were consulted by the producers and scriptwriters of the two-part miniseries “The Reagans.” The fictitious hatchet job, originally scheduled for Nov. 16 and 18, stirred such a storm of protest that it has now been canceled and shifted to the cable outlet Showtime. In announcing that it was yanking the program, CBS stated, “The producers have sources to verify each scene in the script.” But when asked by NewsMax to name the “sources,” the network balked. “I’m sorry, I don’t have any comment on that,” CBS spokeswoman Nancy Carr...