. . . "Sources"@en . . . . . . . "Letters, documents, and offprints given to or purchased by the History of Science Collections from 1967-1978. Includes signed letter from John James Audubon to Robert Havell, typewritten letters to A.D. White and Simon Henry Gage, a letter from Georges Louis Leclerc de Buffon to the abbé de Launay; two letters from Schilling to Samuel Thomas von Soemmerring; a 1757 contract between James Grosett and John Newbery for the latter to manufacture various diet drinks; and documents concerning Angelo Viviani and letters to him."@en . . . . "Also includes portraits of chemists collected and given to the History of Science Collections by Prof. John R. Johnson, mainly photographs of late-19th- and early-20th-century French, German, English, and possibly American chemists, including Antoine Laurent Lavoisier, Albrecht Haller, Justus Liebig (photograph of a bust of him), and Thénard."@en . . "Photographs"@en . . "Portraits"@en . . . . "History"@en . . . . . . . "History of science miscellaneous manuscripts"@en . . .