Links
[1] http://www.cms.k12.nc.us
[2] https://web.archive.org/web/19990128092255/http://www.dresearch.com/
[3] http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf
[4] http://www.fgdc.gov
[5] https://web.archive.org/web/19990218064508/http://www.framingham.k12.ma.us/update/0198rbp.html
[6] https://web.archive.org/web/20001021185422/http://www.geodezix.com/
[7] http://www.census.gov/geo/mtep_obj2/topo_and_data_stor.html
[8] http://www.mapquest.com
[9] https://web.archive.org/web/19990125101510/http://www.navtech.com/
[10] https://web.archive.org/web/20170113083512/http://spatialnews.geocomm.com/features/laserscan2/
[11] http://www.teleatlas.com/Pub/Home
[12] http://www.esri.com/news/arcuser/0401/topo.html
[13] http://www.census.gov/geo/tiger/TIGER97C.pdf
[14] http://www2.census.gov/geo/docs/maps-data/data/tiger/tgrcd108/tl108meta.txt
[15] http://www.census.gov/geo/mod/overview.pdf
[16] http://www.census.gov/geo/mtep_obj2/obj2_issuepaper12_2004.pdf
[17] http://www.census.gov/geo/www/mapGallery/
[18] http://www.census.gov/geo/maps-data/data/pdfs/tiger/tgrshp2012/TGRSHP2012_TechDoc.pdf