The directory, which included figures such as Conan O'Brien, billionaire Michael Bloomberg and ex-Google boss Eric Schmidt, came as a shock to the society, which prefers to keep matters private.

The secretive club, which was founded in 1872, has counted presidents and movie stars among its members. But a full picture of who had joined was never clear—until now.

Also reportedly in attendance at the exclusive summer camp: A's owner John Fisher.

The rumors about what goes on during the Bohemian Club’s annual summer retreat at Bohemian Grove in Monte Rio are always juicy. Nudity and creepy robes! World leaders urinating in the redwoods!

Add Yahoo as a preferred source to see more of our stories on Google. FILE: San Francisco's famous Bohemian Club, 1931. (Royal Geographical Society/Royal Geographical Society via Getty Images) Five ...