Papers of Mary G. Ziegler, 1950-1980

Papers of Mary G. Ziegler, 1950-1980

Finding Aid

Collection No. 10
D.C. Community Archives


Mary G. Ziegler was a teacher and then principal of Forest Haven, formerly known as the District Training School for almost 40 years.  The school was established in 1925 by a pioneering psychiatrist and his wife as a farm colony and hospital at the Fort Meade Army Base for the training of the mentally retarded.

Mrs. Ziegler began working at the School in 1928 soon after it opened and did not retire until 1962.  The D.C. government dedicated and opened a new training facility for the mentally retarded in 1961 and named it the Mary G. Ziegler School to honor Mrs. Ziegler’s “continuous service and unceasing devotion.”

Scope and Content Note

The papers cover Mrs. Ziegler’s career as an educator of the mentally retarded at the District Training School in Laurel, Md., which later became Forest Haven School. 

Papers covering Mrs. Zeigler include photographs of activities and events at the school, publications regarding the training of the mentally retarded, press releases, programs, a newsletter, correspondence, awards, published books, and certificates. 

Also of particular importance are seven scrapbooks of clippings, photographs, programs, invitations, letters, and other memorabilia prepared by Ms. Zeigler on the District Training School, which covers the years 1924 through the 1960s.

Box Inventory

Box 1

  • Activities for . . . Trainables
  • Awards, ca. 1955
  • Brochures, 1953-56 (2 folders)
  • Certificates of appreciation, 1959-70
  • Client-attorney correspondence, 1980
  • Clippings, 1959-60
  • Correspondence, 1960s
  • Center News and Views, 1965
  • Connecticut Avenue Association
  • Certification for flag flying over the Capitol, 1980
  • Forest Haven, 1981
  • Friends of Forest Haven, 1980
  • Government publications, 1966-67
  • History of the D.C. Training School, ca. 1970
  • Letters of appreciation, 1961-62
  • Mental retardation newspaper campaign, 1960s

Box 2

  • Photographs (5 folders and 1 binder)

Box 3

  • Press releases, 1970-1981 (3 folders)
  • Ziegler School Dedication, 1961 (2 folders)
  • Ziegler School Dedication plaque
  • Oversized colorized clipping

Box 4

  • District Training School (DST) scrapbook, 1924-42
  • DST scrapbook, 1924-1954 (primarily photos)
  • DST scrapbook, 1943-54
  • DST scrapbook, ca. 1950s
  • DST scrapbook, 1955-59

Box 7

  • DST scrapbook, 1957-58
  • DST scrapbook, ca. 1960s

Box 9

Published Books

  • Cortazzo, Arnold D., A Guide to Establishing An Activity Program for Mentally Retarded Adults, New York, NY: National Association for Retarded Children, Ind., 1963
  • Department of Health, Education, and Welfare Mental Retardation Activities, January 1967
  • Rosenzweig, Louis E. and Julia Long, Understanding and Teaching the Dependent Retarded Child, Darien, Connecticut: The Education Publishing Corporation, 1960

DC Public Library, Special Collections
DC Community Archives

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