From Dublin Main Drainage Scheme Souvenir Handbook, 1906. The Souvenir Handbook was published to commemorate the inaugaration of Dublin's Main Drainage scheme in September 1906. It contains a transcript of the speech given at the opening ceremony by Alderman Cotton, Chairman of the Improvements Committee (who oversaw the drainage project), a history of the city, an extended account of the progress of the Main Drainage Scheme and several photographic plates, including this one, amongst other material.