Keep honorary members. Collect is laboring under the misapprehension that a third party observer writing in a reliable source is somehow guilty of violating Wikipedia's guidelines for WP:PRIMARY sources. Of course we accept WP:SECONDARY sources which use primary materials, whatever they may be. The third party observer examines the primary material and passes on to the reader any information judged relevant. Below I have listed some reliable WP:SECONDARY sources.   
Domhoff writes "Writers Bret Harte and Mark Twain were made honorary members."
Shoumatoff writes that "Honorary member Richard Nixon, meanwhile, called it 'the most faggy goddamned thing you could ever imagine.'" Shoumatoff also lists Mark Twain as a member.
Parry, Albert. Garrets and Pretenders: A History of Bohemianism in America. New York: Covici, Friede, 1933. On page 219 Parry writes that Bret Harte and Mark Twain were made honorary members of the Bohemian Club.
"Early Artists of the Bohemian Club: San Francisco as the Center of West Coast Art ", Resource Library Magazine. "Mark Twain and Bret Harte were honorary members..."
Ben Tarnoff writes in The Bohemians: Mark Twain and the San Francisco Writers Who Reinvented American Literature, page 185, that Ina Coolbrith was "elected" to the position of honorary member.
LaRouchite Brian Lantz writes in Executive Intelligence Report November 1982, "Bohemian Grove, Jack London, and the cultishness of California's politics", "Mark Twain was made an honorary member in 1873; Theodore Roosevelt was made an honorary member in 1903."
Stephen J. Mexal writes in Reading for Liberalism: The Overland Monthly and the Writing of the Modern American West, page 249, that "In recent years former secretary of state Henry Kissinger, former president George H. W. Bush, and former defense Donald Rumsfeld have all become members or honorary members."