Part 1 What is a geographic information system?: geographical information systems - an overview, Duane F.Marble, geographical information systems - a new frontier, Roger F.Tomlinson, a classification of software components commonly used in geographical information systems, Jack Dangermond, GIS versus CAD versus DBMS - what are the differences?, David J. Cowen. Part 2 Examples of practical applications: MAGI - a state-level grid cell system, State of Maryland, ARC/INFO - a modern GIS, Environmental Systems Research Institute, technical description of the DIME system, US Bureau of the Census, prinicpal components of the census bureau's TIGER file, Joel Sobel, the Tiger system - automating the geographical structure of the United States, Robert W.Marx, current and potential uses of geographical information systems - the north American experience, Roger F.Tomlinson, an experiment in land-use allocation with a geographical information system, C.Dana Tomlin and Kevin M.Johnston, Integration Of Geological Datasets For Gold Exploration In Nova Scotia, G.F.Bonham-Carter, F.P.Agterberg and D.F.Wright, modeling community vulnerability to hazardous materials using geographical information systems, Robert B.McMaster, representing and applying knowledge about spatial processes in environmental management, J.R.Davis, P.Whingham, and I.W.Grant. Part 3 Operations and problems of building a database: creating large digital files from mapped data, Hugh W.Calkins, manual digitizing systems, E.Alan Cameron, interaction between the cartographic document and the digitizing process, Donna J.Peuquet and A.Raymond Boyle, a review of digital data commonly available and some of the practical problems of entering them into a GIS, Jack Dangermond, efficient digitizing through the combination of appropriate hardware and software for error detection and editing, Nicholas R.Chrisman. Part 4 GIS internals - data representation and analysis techniques: spatial data models - a conceptual framework and comprehensive review, Donna J.Peuquet, historical data as an explicit component of land information systems, Ric Vrana, it makes me so CROSS, David Douglas, the accuracy of map overlays - a reassessment, Nicholas R.Chrisman. Part 5 Design and evaluation of GIS: establishing a geographical information system in relation to its use, a process of strategic choices, W.H.Erik DeMan, a conceptual model of the manual digitizing process, Duane F.Marble, Jean P.Lauzon and Matthew McGranaghan, performance eval and work-load estimation for GIS, Michael Goodchild and Brian R.Rizzo, liability for information, Earl F.Epstein and Howard Roitman.