► What are the United States map accuracy standards?

► What is the Vector Product Format and where can I get information?

► What is this SDTS thing and is it available via ftp?

► What is a DXF file and where can I get info about it?

► What is DEM and where can I find out about some?

► Where can I get information about TIGER/Line?

► How do I order USGS maps?