Does MPHS have photographs: No
Address in Mount Prospect: Unknown
Birth Date: Unknown
Death Date: Unknown
Children: Diane, Betty and Derwood
Interesting information on life, career, accomplishments:
E. H. Janssen was the first dentist in Mount Prospect. For many years he was the only dentist in Mount Prospect. He had an office in Mount Prospect, as well as offices in Chicago and Lombard. However, as Mount Prospect developed he began to spend most of his time here. His first office in Mount Prospect was at 100 E. Northwest Highway, but he later moved to a larger office at 214 E. Emerson.