Spatial data quality, J.L. Morrison; lineage, D.G. Clark and D.M. Clark; positional accuracy, J.E. Drummond; attribute accuracy, M.F. Goodchild; completeness, K. Brassel et al; logical consistency, W. Kainz; semantic accuracy, F. Salge; temporal information, S.C. Guptill; an evaluation matrix for geographical data quality, H. Veregin and P. Hargitai; looking ahead, S.C. Guptill and J.L. Morrison.