Research Triangle Institute runs the National Household Survey on Drug Abuse (NHSDA) for the National Institutes of Health. For the 1998 survey, 7,800 sample segments were chosen from every state in the country. Over 1,200 survey takers need to know where to administer the survey in those 7,800 geographic locations. For each segment, a set of maps was generated showing county, tract, segment, and block boundaries to help survey takers collect data from the correct locations. Over a three-week period an automated mapping system generated over 75,000 of these unique maps to be sent to the survey takers.