The Glenroy C. Stein papers contain scores and method books written by Stein and various other composers. Also included are personal papers which include newspaper clippings, correspondence, posters, and concert programs.

Glenway Wescott (1901–1987) was an American poet, novelist, essayist and a figure of the American expatriate literary community in Paris during the 1920s. The collection consists of two notecards, three letters, a photograph, and an article from the New Yorker. Materials range in date from 1945-1967.

Grace Denio Litchfield (1849-1944) was an American poet and novelist. This collections consists of nine scrapbooks, with material dating from 1871 through 1936, including copies and reviews of Litchfield's literary work.

This is an artificial collection made up of printed ephemera, letters, and photographs that accompanied books by and about H. L. Mencken.

Henry Harrisse was a scholar and bibliographer whose particular interest was the discovery of America. He was born in Paris in 1829. The collection consists largely of items removed from books in the Harrisse Collection in Special Collections at Johns Hopkins dating from approximately 1876-1910, as well as correspondence about Harrisse after his death, dating from 1937-1941.

Johns Hopkins (1795-1873) was a highly successful Baltimore merchant and philanthropist. He left much of his wealth to found a university and hospital in Baltimore. This collection contains manuscripts, photographs and printed material by or about Johns Hopkins and his ancestors, 1743-2005.

The Horstmeier family resided in the Boston, Massachusetts area in the 1890s. The scrapbook (1855-1863) contains clippings of poems and prose removed from newspapers and most likely assembled during the Civil War period.

Howard Thatcher was a pianist, organist, composer, and teacher in the Baltimore area. He was an alumnus of Peabody who taught harmony, counterpoint, orchestration, and composition for the Peabody Conservatory. The Howard R. Thatcher papers contain his manuscript and published scores as well as personal papers.

Hugh Raymond Newsom (1891-1978) was an organist and composer who lived in Baltimore. The collection includes manuscript scores of music composed by Hugh Newsom or by his wife, harpist Marjorie Brunton Newsom; documents related to Hugh Newsom's career; and reel-to-reel recordings of his music.

J. Montgomery Gambrill (1880-1953) was a historian and professor at Columbia University and Johns Hopkins University. This collection consists largely of typed and handwritten correspondence, subject files, and teaching files reagarding his research and administrative duties, from 1794 to 1966.

The Goodwillie family came to Baltimore, Maryland from Cleveland, Ohio in 1898. The scrapbook which forms this collection consistly mostly of newspaper clippings relating to the family from the 1890s to 1919.

J. Louis Kuethe (born 1905) served as assistant librarian at Johns Hopkins University for 43 years. The collection consists of articles published by Kuethe in Baltimore newspapers, correspondence related to his writings, and Kuethe's notes for a survey of place names of Maryland all dating from 1939-1968.

Jean Eichelberger Ivey (1923-2010) was a composer, pianist, electronic musician, professor, and the founder of the Peabody Conservatory Electronic Music Studio, which she directed from 1969 until her retirement from Peabody in 1997. The Jean Eichelberger Ivey papers contain scores and recordings of Ivey's musical works, writings and notes by Ivey, personal and professional correspondence, programs and clippings, photographs, and other personal and professional papers.

Jacobus Henricus (Henry) van 't Hoff (1852-1911) was a chemist credited with founding the science of stereochemistry, and in 1901 he was awarded the first Nobel Prize in chemistry. The majority of the papers are those reflecting family affairs or honors accorded van 't Hoff for his work. This collection does not contain his scientific or working papers except for notes of two lectures and copies of his published papers. The papers are mostly in Dutch. The papers span from 1837 to 1924.

John Barry Talley was a graduate of Peabody Institute and Director of Musical Activities at the U.S. Naval Academy. His papers include clippings, concert programs, papers, and articles relating to his career.

John Charles Thomas was an internationally known baritone who attended Peabody Institute from 1909 to 1912. His papers include scores, personal and business papers, concert programs, clippings, correspondence, ephemera, photographs, and recordings.

The collection consists of printed articles by John Dewey and reprints from education journals discussing his philosophy of education. Also included are clippings, centenary celebration items, and two photographs of Dewey.

John Martin Vincent (1857-1939) years was a Professor of European History at Johns Hopkins University. This collection consists of correspondence, scrapbooks, subject files, and personal materials ranging in date from 1881 to 1925. The bulk of the material is correspondence dating from 1900-1910.

John Pendleton Kennedy (1795-1870) was an author, politician, lawyer, and original trustee of the Peabody Institute. The John Pendleton Kennedy papers, 1812-1896, contain correspondence, manuscripts, scrapbooks, and other documents related to Kennedy's varied personal and professional interests, including documents related to the founding and early years of the Peabody Institute.