The Atlantean Cultural Mission Plaque

A gold plaque originally set in one of the St. Francis Hotel's foundation stones, like a dedication. It read, in English:

On this site, December 1969, the Republic of Atlantis established under the auspices of the Free City of Yerba Buena (formerly San Francisco) -- its first cultural mission to the United States -- in honor of all who fell in the Battle of Berkeley. To a new understanding between Atlantis and the youth of America. Venceremos!

Immediately below this inscription was the same or similar commemoration but written in a Greek-looking language that is presumed to be "Atlantean."