Dictionary of Scientific Biography (DSB) Complete Dictionary of Scientific Biography. Provides information on the history of science through articles on the professional lives of scientists. All periods of science from classical antiquity to modern times are represented.
Eebo Early English books online. Contains digital facsimile page images of virtually every work printed in England, Ireland, Scotland, Wales and British North America and works in English printed elsewhere from 1473-1700.
Ordbogen.com Collection of dictionaries which contains Ordbogen.com and Gyldendals Ordbøger. The collection of dictionaries covers a large number of subject areas and languages. The list of all relevant dictionaries is obtained when you search a word.