Title: Hamilton GIS Vector Data Date: 2006 Geography: Hamilton Publisher: City of Hamilton Availability: Available for direct download by Ryerson community members. More info. Title: Toronto and Region Conservation Authority (TRCA) Geospatial Data Date: 2007 Geography: Greater Toronto Area (GTA) Publisher: Toronto and Region Conservation Authority (TRCA) Availability: Available for direct download by Ryerson community members. More info. Title: Toronto and Surrounding Area Base Data Classes (OMNR Aurora District) Date: Varies depending on data set. Geography: GTA and Surrounding Area, Aurora District Publisher: Ontario Ministry of Natural Resources Availability: Available for direct download by Ryerson community members. More info.