Information about Geographical Information Systems (GIS) from ESRI, the vendor of ArcGIS.

"helps people find commonly used applications and maps for a better understanding of issues and trends."

"The Cuyahoga County Geographic Information Systems (CEGIS) Department manages and coordinates the use of GIS and its related technologies within Cuyahoga County. A GIS is defined as an advanced computer system capable of collecting, storing, viewing, and analyzing geographically referenced or spatial information."

"interagency committee that promotes the coordinated development, use, sharing, and dissemination of geospatial data on a national basis. This nationwide data publishing effort is known as the National Spatial Data Infrastructure (NSDI)."

"an organization whose goals are to: encourage the creation of digital geographic data of value to multiple users, foster the ability to easily determine what geographic data exists and foster the ability to easily access and use this data."

"NSGIC's Mission is to promote statewide geospatial coordination activities in all states and to be an effective advocate for states in national geospatial policy and initiatives, thereby enabling the National Spatial Data Infrastructure (NSDI)."