"Last month the American Library Association held its annual conference in San Francisco, one of the same kind that I attended at the Thousand Islands [1887 ALA Conference]. But California is so far away that not so many attended this year as usual. Only about fifty came from afar but they represented states all along the line from Massachusetts to Colorado. A Worcester man, S. S. Green, was president. The week they were here I spent with them in San Francisco, and enjoyed witnessing the effect upon them of a little experience of California. Local committees had arranged for their reception here in Sacramento, San Francisco and at other places they visited so I hope they carried pleasant memories of their visit home with them. Even nature exerted herself to entertain them and the very first night showed her appreciation of their presence by touching us up with the liveliest earthquake we have had in years.”
Clark went on to become Librarian of the San Francisco Public Library in 1894 where he served for thirteen years. In a strange flashback to his mention of the 1891 San Francisco earthquake in the letter above, he was Librarian of the SFPL during the 1906 San Francisco earthquake that destroyed the central library along with two of its branches. He became Librarian of Stanford University in 1907 where he completed his career. Clark helped found the California Library Association and served as its second president in 1898.