一般注記At head of title: Library of Congress.
Schedules for the other subclasses of class G were printed in 1910. The GT schedules are based in part upon a preliminary scheme made by Mr. J. Christian Bay. The index of the GR and GT schedules was prepared by Dr. G. M. Churchill, who also prepared the schedules for the press. cf. Pref. (signed: Clarence W. Perley, chief classifier)