As mayor of Boston, Kevin White oversaw what many have called its transformation into a world-class city. During his four terms in office, from 1968 through 1984, he oversaw revived development in the city’s downtown and led the way through a bitter struggle with school integration. White’s tenure was also marked by corruption allegations. But even as many of his associates were convicted on corruption charges, several FBI investigations into White’s activities as mayor came up dry.

Which article in the November 1985 issue of Cosmo so infuriated one reader from Phoenix, Ariz., that they mailed editor-in-chief Helen Gurley Brown a death threat with a razor blade taped to the letter? Was it “An Intimate Look at Adultery?” “Twelve Hideaways for Lovers?” Or could it have been the pro-pagan “Astro Forecast for Your Man?”

Like many agencies, the San Diego County Sheriff’s office responded that they had no documents relating to drones. But in this case, MuckRock discovered there were responsive documents — which were only released by a different city.

Documents released to MuckRock illuminate lessons the Defense Department took from its response to Hurricane Andrew in August 1992, which destroyed thousands of homes across Florida and Louisiana and left thousands without power.

The National Security Agency operates with more secrecy and freedom than perhaps any other U.S. government entity. As 15 pages of recently released talking points show, even its own statements defending its activities are sometimes considered too sensitive for the public to see.