There is no order here in California except that almost all libraries
apply first to the State library and the State library being naturally
the best informed on the special lines of strength in the various
libraries in California, can request the library that is either known
to have it or is likely to have it, to forward it to the library
needing it. This is already possible for periodical files as there is
at the State library a union list of periodical files in California
libraries. Periodicals which are not in any California library, are
borrowed with least loss of time, from the Library of Congress or
Surgeon General's library.