The Melbourne and Metropolitan Board of Works (MMBW) plans were produced from the 1890s to the 1950s. They were crucial to the design and development of Melbourne's sewerage and drainage system. The plans, at a scale of 40 feet to 1 inch (1:480), provide a detailed historical record of Melbourne streetscapes and environmental features. Each plan covers one or two street blocks (roughly six streets), showing details of buildings, including garden layouts and ownership boundaries, and features such as laneways, drains, bridges, parks, municipal boundaries and other prominent landmarks as they existed at the time each plan was produced. (Source: State Library of Victoria). This plan forms part of a large group of MMBW plans and maps that was donated to the Society by the Mr Poulter, City Engineer of the City of Kew in 1989. Within this collection, thirty-five hand-coloured plans, backed with linen, are of statewide significance as they include annotations that provide details of construction materials used in buildings in the first decade of the 20th century as well as additional information about land ownership and usage. The copies in the Public Record Office Victoria and the State Library of Victoria are monochrome versions which do not denote building materials so that the maps in this collection are invaluable and unique tools for researchers and heritage consultants. A number of the plans are not held in the collection of the State Library of Victoria so they have the additional attribute of rarity.Original survey plan, issued by the MMBW to a contractor with responsibility for constructing sewers in the area identified on the plan within the Borough of Kew. The plan was at some stage hand-coloured, possibly by the contractor, but more likely by officers working in the Engineering Department of the Borough and later Town, then City of Kew. The hand-coloured sections of buildings on the plan were used to denote masonry or brick constructions (pink), weatherboard constructions (yellow), and public buildings (grey). MMBW Plan No.1578 is significant in that it defines the extent of two private schools: Xavier College and Kew High School (now part of Trinity Grammar) by 1904. In relation to the latter, the plan clarifies which buildings the High School operated from behind the mansion ‘Molina’. Established in 1902, Trinity Grammar was to later lease and subsequently buy Molina (now ‘Merritt House’) and ‘Elsinore’ (now ‘Roberts House’). Xavier College had been established in 1872. This 1904 plan delineates the West Wing and the Great Hall (built in 1890).melbourne and metropolitan board of works, detail plans, maps - borough of kew, mmbw 1578, cartography