Hans-Peter Eugster taught geochemistry at Johns Hopkins University from 1958 until his death in 1987. The collection consists of Eugster's professional papers dating from 1944-1988. These document all phases of Eugster's varied scientific career from collecting raw data up through finished publications for most of his projects.

Harriet L. Lagowitz was a resident of New York city in the late nineteenth century. The collection (1877-1890) is formed by two autograph albums and approximately 80 envelopes containing the autographs of theater and stage performers.

Harry Fielding Reid was professor of geology at Johns Hopkins University and a geologist known for his contributions in the fields of seismology and glaciology. The collection consists of a small group of his professional writings and correspondence, personal items, reprints, and a large selection of photographs and negatives spanning 1894-1944.

The collection consists of two items: a photograph of Hart Crane, and a press release regarding Paul Mariani's biography of Hart Crane, The Broken Tower. Items in the collection are from 1999.

This collection relates to the donation of Margaret B. Wilson’s personal library after her death in 1945. Helen H. Tanzer was the executor of Wilson’s will. The materials consist of Tanzer’s correspondence, book checklists, shipping receipts for the books, income tax information, and a news clipping.

Henry Carrington Lancaster, a scholar and educator in the fields of French literature and history, was born in 1883 in Richmond, Virginia. The collection spans the years 1913-1954 and includes correspondence, a scrapbook, research notes outlining and analyzing the plays of 17th and 18th century French dramatists and the repertoire of the Comedie Francaise, drafts and typescripts, and galley proofs. A large part of the collection is in French.

Henry Hazlehurst Wiegand [1858?-1943] was trained as an electrical engineer. The collection consists of 20 notebooks of student class notes or laboratory notes dating from 1876-1906.

Henry W. Bragdon (1906-1980) was an author and instructor of history. Collection consists of researh material collected by Bragdon for his published volume, "Woodrow Wilson: The Academic Years." Bragdon is thought to have collected the research from approximately 1945 to the time of the book's publication in 1967.

Herbert Baxter Adams (1850-1901) was an American educator and historian. The collection consists of material spanning 1851-1903. The materials include correspondence, lectures, writings, research material, files related to Johns Hopkins University, the United States Bureau of Education, the American Historical Association Committee of Seven, personal files, and prints and photos.

Herbert Spencer Jennings (1868-1947) was an American zoologist, geneticist, and eugenicist. The collection spans the years between 1893-1945 and includes correspondence, reprints, manuscript lecture notes, and biological drawings.

Herbert William Magoun (1856-1956) was a professor of Greek and Latin and an alumnus of Johns Hopkins University. The collection consists of one manuscript in typescript with corrections entitled "Prosody in Four Parts," dated 1931.

Herman Louis Ebeling (1857-1945) was a classics scholar and Johns Hopkins University alumnus. The collection consists of student notebooks from his graduate and undergraduate studies at Johns Hopkins University and a small amount of correspondence from his teaching career at Goucher College. The collection spans 1886-1927.

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.

The papers consist of land records, legal documents, family correspondence, family bibles, diaries, scrapbooks, and photographs of multiple families dating from 1684 to 1972. The families represented include the Maynard-Owen-Eastman families, the Ridgely family, and the Howard family.

These papers consist of writings, diaries, printed material, photographs, and correspondence relating to NASA administrator and Johns Hopkins University alumnus Hugh L. Dryden's personal and professional life. Also included are his student work, diaries, sermons, awards, and honorary degrees. The overall collection spans from 1908 to 1966.

Ira Remsen, American chemist, educator and second President of Johns Hopkins University was born in New York City on February 10, 1846. The collection spans the years 1868 - 1938. The material consists of correspondence, speeches, publications, lectures and lecture notes, notebooks, scrapbooks, newspaper clippings, photographs, reprints, books annotated by Remsen, and memorabilia.

Irene Aloha Wright, American writer and journalist, was born in 1879. She became a special writer for the Havana Post (1904 - 1905) and city editor of the Havana Daily Telegraph (1905 - 1907). The collection consists of correspondence (primarily in Spanish and addressed to the Havana Daily Telegraph) written during the August (1906) Revolution.

Israel Rosen (1912-1988) was a physician and collector of modern art. The collection consists largely of non-book printed material collected by Israel and Selma Rosen to support their modern art collection. These include newspaper clippings, magazine articles, private gallery invitations and listings, brochures, and fliers, and catalogs from the major auction houses. Materials range in date from 1968-1988.

Jacob Harry Hollander was born in Baltimore in 1871 and was appointed by Presidents McKinley and T. Roosevelt to represent the United States in economic policy abroad. The papers date from 1895-1940 and are largely Hollander's professional correspondence dealing with his teaching at Hopkins, his writings on economic theory, and his work in the areas of social welfare and economic reform.

James D. McCabe, Jr. (1842-1883) was a Confederate supporter and a popular writer of more than 30 works including histories, biographies, and plays. The collection consists of letterbooks, unpublished manuscripts, and photographs dating from 1862 to 1881.