A cikin 1854, William Cooper ya kafa aikin lissafi a London, wanda ya zama Cooper Brothers shekaru bakwai bayan haka lokacin da 'yan uwansa uku suka shiga.A 1898, Robert H. Montgomery, William M. Lybrand, Adam A. Ross Jr. da ɗan'uwansa T. Edward Ross sun kafa Lybrand, Ross Brothers da Montgomery a Amurka.A cikin 1957 Cooper Brothers; Lybrand, Bros Ross & Montgomery da Kamfanin McDonald na Kanada, Currie da Co sun yarda su ɗauki sunan Coopers & Lybrand a aikace na duniya. A cikin 1973 kamfanonin membobin uku a Burtaniya, Amurka da Kanada sun canza sunayensu zuwa Coopers & Lybrand. Sannan a 1980 Coopers & Lybrand sun faɗaɗa ƙwarewar sa a cikin rashin biyan kuɗi ta hanyar sayen Cork Gully, babban kamfani a wannan fannin a Burtaniya. A wasu ƙasashe, gami da Burtaniya, Coopers & Lybrand sun haɗu da Deloitte Haskins & Sells a cikin 1992 suka sake canza sunan kamfanin zuwa Lyopers & Coopers. Tambaya: Menene sunan kamfanin Lyopers & Co?
Coopers da Lybrand Deloitte