The only thing Valachi really brought to light was the name, "Cosa Nostra". The feds already had an idea of what they called themselves but couldn't figure out if it was Nostra, Nosca or some other stuff. After a conversation with one of his briefing agents, Valachi was asked what they called their organization, and one agent remarked, "I know it's Cosa..." basically baiting Valachi, in which Valachi responded, "Cosa Nostra, so you know it then."

The charts and pretty much everything else they'd had gathered from the illegal wiretaps placed by Hoover and Anslinger's black book.