Series consists of records related to Tim Campbell's work as Principal Urban Sector Specialist and Head of the Urban Partnership in the Transportation, Water and Urban Development Department's Urban Development Division (TWURD). Series consists almost exclusively of correspondence, the majority of which are incoming. Records contain correspondence with external agencies, institutions, and government representatives and include but are not limited to: the Inter-American Development Bank; the World Economic Development Congress; the Organisation for Economic Co-operation and Development (OECD); the United Nations Centre for Human Settlements; the World Conference of Mayors, Inc. Correspondence with government agencies and embassies of Switzerland, Great Britain, Sweden, Denmark, and Ecuador is also included. Correspondence relates to conference and meeting invitation, information exchange, and collaboration.