Dr. Hilde L. Mosse was born in Berlin in 1912, the eldest child of Hans and Felicia Lachmann-Mosse. The Mosses were one of the wealthiest families in Germany, her mother heir to the vast Mosse publishing empire, but as a teenager Hilde did not embrace their bourgeois lifestyle. The Weimar Republic was in the midst of an economic crisis, and Hilde volunteered with die Zugscharen, an innovative social-work movement that ran day hostels and provided social and emotional aid to underprivileged children in Berlin. She was also politically active, sympathetic to Marxism and involved in left-wing youth groups of working class young people whose meetings were frequently harassed by weapon-wielding Nazi supporters.

Hilde studied medicine at the University of Basel in Switzerland in the 1930s, and remained there when the Mosse family was exiled after the Nazis came to power in 1933. She then immigrated to America in 1938 and worked as a pediatrician in New York City at the Queen’s Hospital Center. Ultimately, she spent over forty years treating children with learning issues and psychiatric maladies.

In 1946, Hilde co-founded the Lafargue Clinic in Harlem, the first mental health clinic for the neighborhood’s underserved Black community. She was Physician-in-Charge of the all-volunteer staff, seeing patients two nights a week. Her mission there went far beyond psychiatry, and she worked with nurses and social workers to tackle the larger systemic inequality that plagued her patients. In 1951, she and her colleague Dr. Fredric Wertham brought several young students from Delaware to the clinic to do a psychiatric study on the effects of segregated schooling for the Belton/Bulah v. Gebhart case challenging the practice. Their research was pivotal to ending segregation in Delaware, and Belton was combined with several other cases for Brown v. Board of Education, the Supreme Court case that ultimately ended segregation throughout America. The lead counsel for the case, Thurgood Marshall, singled out the clinic’s work after the victory, telling them in a letter that “your great efforts contributed significantly to the end result.”

The Lafargue Clinic ultimately closed in 1958, but its effects were profound. Beyond the landmark Brown v. Board of Education case, the clinic was a haven for Harlemites. Reverend Sheldon Hale Bishop said the clinic was “the kind of service we knew many people needed and were unable to get elsewhere,” and called it “the greatest thing that has happened in Harlem in years.” Author Ralph Ellison concurred, and wrote that the clinic was “perhaps the most successful attempt in the nation to provide psychotherapy for the underprivileged,” noting that “certainly it has become […] one of Harlem’s most important institutions.” 

Hilde was certified as a psychiatrist by the American Board of Psychiatry and Neurology in 1951, expanding the scope of her medical expertise. Both her daily hospital work and her efforts at the Lafargue Clinic contributed greatly to her research, and she published dozens of well-regarded papers on childhood behavioral disorders, the effects of mass media on children, and reading disabilities. Her most notable publication, The Complete Handbook of Children’s Reading Disorders, put forth an interdisciplinary approach to diagnosis, treatment, and prevention of reading disorders. In 1980, Hilde received the Watson Washburn Memorial Award for Excellence in Education from The Reading Reform Foundation.

In 1964, Hilde returned to Germany as a Fulbright Professor in Child Psychiatry at the University of Marburg, a meaningful appointment for the exiled doctor. She continued to work with children in New York until her death in 1982, devoting her life to her passion for medicine and psychiatry. Her commitment to serving the economically disadvantaged and the emotionally troubled in Harlem continues today through the work of the Northside Center for Child Development in New York City. Hilde’s nephew, Roger Strauch, is a board member of Northside, and Northside’s CEO is now known as The Hilde L. Mosse President & CEO.

Additional Resources:

“Dr. Hilde Mosse and the Lafargue Clinic”
Essay by Tim Hanley

“Honoring My Aunt, Dr. Hilde L. Mosse”
Transcription of a speech by Roger Strauch at a Gala Event for the Northside Center for Child Development

“The Heiress Who Helped End School Segregation: The Hilde Mosse Story”
Exile Podcast, February 4, 2025:

Speech by Hilde Mosse – “A New Look at Reading Disorders,” August 12, 1977:

Hilde’s brother George L. Mosse, speaking at her memorial service about the legacy of her psychiatric work, January 1982:

Hilde Mosse discussing violence in comics books and television on The Barry Farber Show, November 12, 1968, with Marvel Comics’ Stan Lee, TV writer Dennis Marks, and Childhood Productions’ Barry Yellen (from the Stan Lee Papers at the American Heritage Center, University of Wyoming).

Part One:

Part Two:

“Color on My Mind: The History of the First Black Mental Health Clinic in America”
Leo Baeck Institute, May 20, 2021: