Marcus Ahlenfeld papers
Marcus Ahlenfeld was born in Bolkenheim, Silesia, and studied medicine in Germany, and received a medical degree in 1832. Within a year, Ahlenfeld moved to the United States, continuing his medical studies at the University of Maryland, where he earned an MD in 1835. After his naturalization in 1845, Ahlenfeld maintained a successful medical practice in Maryland and northern Virginia. Ahlenfeld died ca. 1854.