"Printed as manuscript".
"[Prepared] originally by Dr. W.F. Koenig, of the catalogue division, under the supervision of Mr. Charles Martel."--Preface, signed: Clarence W. Perley, chief, Classification division.
Kept up to date by the Division's L.C. classification--additions and changes, and by an irregular cumulative publication issued by Gale Research Company, entitled Library of Congress classification schedules: a cumulation of additions and changes, Class P, PB-PH.
Electronic reproduction. [Place of reproduction not identified] : HathiTrust Digital Library, 2010.
Description based on print version record.