  
These maps cover an area approximately 9 miles (north-south) by 7 miles (east-west). The areas covered are determined by latitude and longitude. These maps are also known as 7.5-minute topographic maps, because they cover 7.5 minutes of longitude and 7.5 minutes of latitude.
NOTICE: The USGS will be implementing a new price structure for topographic maps, effective March 1, 2009. As a result, we will have to increase the price of topographic maps by the same amount. On March 1, 2009, the new price for 1:24,000 scale topographic maps will increase from $6 to $8 per map, and the new price for 1:100,000, 1:250,000 and 1:500,000 scale topographic maps will increase from $7 to $9 per map.
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