DeLorme and USGS Set a New Standard in Topographic Maps on CD-ROM! Now you can have the best of both worlds the authentic USGS 7.5-minute quad maps you have relied upon for years plus DeLorme's updated topographic and street-level - together for the first time in one convenient CD-ROM program. You can access the USGS maps in 17 smooth-scrolling viewing levels, plus the updated DeLorme data in 80 additional levels. 3-D TopoQuads is ideal for surveyors and land-use engineers who need detailed, seamless map coverage of individual states. Quickly locate and center the map on your area of interest. Use the powerful draw and measuring tools to define areas in acres, square feet, meters and more. Gain amazing 3-D views of the terrain using the powerful pitch and rotate tools. You can even use with most GPS receivers to record specific locations on detailed Topo maps for in-depth analysis. North and South California can be ordered at a price of $199.95.