Digital Raster Graphics:

• Digital Raster Graphics, USGS
• Digital Raster Graphics FAQ, Georgia GIS Data Clearinghouse

Digital Line Graphs (DLGs), USGS

Digital Elevation Models:

• Digital Elevation Models (DEMs), USGS
• Digital Elevation Models, Brian Klinkenberg, University of British Columbia
• Recipes for Digital Cartography: Cooking with DEMs, USGS

Spatial Data Transfer Standard (SDTS) Information Site, USGS

GeoTIFF Format Specification, USGS

Digital Orthophoto FAQ, Georgia GIS Data Clearinghouse

TIGER FAQ, US Census Bureau

This is the index of frequently asked questions (FAQ) about TIGER/Line files, The TIGER Mapping Service, LandView, the Census Tract Street Index and ZIP Code data

Scientific Data Format Information FAQ, compiled by the newsgroup sci.data.formats