This study presents results on hitherto unknown data on lobotomies performed at the former State Mental Hospital of Umedalen (from here on called simply "Umedalen") in the north of Sweden. More than 700 operations were carried out from 1947 through 1960, and we calculated the average rate of postoperative mortality to 7.4 percent, and that 63 percent of those who were operated were women. By considering annual hospital reports to the National Board of Health (Medicinalstyrelsen), we also made the first mapping of early psychosurgery in Sweden; approximately 4,500 lobotomies were performed between 1944 and 1966. Statistical analysis, qualitative content analysis, and discourse analysis were used. The study supports earlier findings of female preponderance in the number of lobotomy operations.