José Robles Pazos was an Associate Professor of Spanish at Johns Hopkins University born in 1897 and shot as a traitor by the Spanish Republican Government in February of 1937. The collection spans the years 1929-1940 and consists of correspondence regarding Robles' arrest, a contract for the Spanish translation of 13 books by H.L. Mencken, and two life insurance policies.

Edwin Litchfield Turnbull (1872-1927) was a musician who helped create both the Johns Hopkins University and the Baltimore Symphony Orchestra. The collection spans the years 1881-1971 and consists of approximately 400 letters, photographs, loose newspaper clippings, juvenile notebooks, and 13 scrapbooks of newspaper clippings relating to musical, social, or other events.

Collection consists of material by, about, and related to the Baltimore writer Henry Louis Mencken as collected by George H. Thompson. Materials date from 1905-1950.

Henry Louis Mencken (1880-1956) was an American journalist, satirist, cultural critic and scholar of American English. This collection consists of letters written by H. L. Mencken to colleague and girlfriend Leda V. Bauer dating primarily from 1928-1930, with an additional letter from J. G. Clemenceau Le Clercq [Paul Tanaquil] from 1924.

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

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.

A collection of 16 letters written from H. L. Mencken to Robert Loveman. Mencken touches on issues such as Germany and World War I, beer, lyric poetry, and the Mexican revolution.

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.

John Calvin French was professor of English and librarian at The Johns Hopkins University and author of "A History of the University founded by Johns Hopkins." The collection consists largely of his research and manuscript notes dealing with the founding and later development of the University dating from 1928-1957.

Volume of popular American sheet music owned by H. L. Mencken. Approximately 20 individual compositions.

Nathan Bryllion Fagin taught at Johns Hopkins in the early 20th century. The collection consists of correspondence with Fagin's literary friends and colleagues; materials relating to the Moscow Theatre Festival of 1932; papers and course outlines from his teaching career at Johns Hopkins University dating from 1925 to 1951.

A committee was formed in 1940 to celebrate the centenary of poet Sidney Lanier's birth, February 3, 1842. The collection consists of the correspondence of Elinor Pillsbury recruiting members of the National Lanier Centennial Committee, dating from 1939 through 1945.

Samuel Ottmar Mast (1871-1947) was a biologist and zoologist at Johns Hopkins University. The collection consists of correspondence, administrative information related to running an academic department, and reprints of articles. The collection materials range in date from 1912 to 1947.

A collection of letters from contemporary literary figures and publishers.