Are you even cleaning if there is no mid-point chaos?

Davis-Christopher Textbook of Surgery
David C. Sebastion, Jr., M.D., editor
W. B. Unders Co, (US, UK, CA), 10th edition, 1977
printed in US

Webster’s New World Dictionary, Second College Edition
David B. Guralnik, editor
Nelson, Foster & Scott Ltd., CA, 1970
ex libris signature “Ralph Barrick”

IBM Personal Computer Hardware Reference Library 6025000, Guide to Operations 2.02
International Business Machines, 1983, revised ed. April 1983

IBM Personal Computer Hardware Reference Library 6025010, BASIC v1.10
International Business Machines Corp.,US, second edition, May 1981