Amral posted:It was circulating in schools 1953 to around 1956. When I started using exercise books in 1957 the Queen's picture had changed and Prince Philip's picture was discontinued. The major high schools in Georgetown issued their proprietary exercise books. On the cover of Central High School exercise books was the school's coat-of-arms with the motto COGITO ERGO SUM which is now Demerara_Guy's motto. We are both old boys of CHS.