The data in this report are the result of the first in a series of five proposed inventories of licensed practical nurses. The study revealed a total of 343,635 practical nurses holding licenses to practice at the time of the study. About 74 percent reported they were employed in nursing, 20 percent indicated they were not employed in nursing, and 6 percent did not report their status. General characteristics of the entire population of licensed practical nurses were: approximately 97 percent were female, 59 percent were married, 21 percent were widowed, separated or divorced, almost 14 percent were single, and the median age was 44.1 years. This data should be a valuable asset to the body of statistical knowledge on nursing personnel in this country. (Author/GEB)