American physician and endocrinologist Rebecca Lee Dorsey died #OTD in 1954. She is known as the world's first female endocrinologist and the first woman physician to practice in Los Angeles.
Dorsey was said to have been the attending physician at over 4,000 births during her lifetime, to have founded a nursing school and organized the city's first maternity ward, and to have administered the first diphtheria inoculation in Los Angeles in about 1893.