Houghton Mifflin Harcourt
Harcourt: Biographies: Anton Von Leeuwenhoek
This brief biography of Anton von Leeuwenhoek is a great resource to understand how influential he was to the discovery of cells in his time.
Wikimedia
Wikipedia: Anton Van Leeuwenhoek
This site from the Wikipedia encyclopedia provides a concise explanation of van Leeuwenhoek's (1632-1723 CE) contribution to the improvement of the microscope and his contributions to cell biology.
Other
Science Superstars: Anton Van Leeuwenhoek
This site is provided for by Zephyrus. So, who was Anton van Leeuwenhoek (1632 -1723 CE)? What else did Leeuwenhoek do? Did he achieve anything else? What honors were awarded to him? These questions are answered in this informative site.
University of California
Ucmp: Antony Van Leeuwenhoek
This site from University of California has a biography and picture of Antony van Leeuwenhoek, a scientist in the 18th century.
Florida State University
Florida State University: The Leeuwenhoek Microscope
Microscope pioneer and amateur scientist Leeuwenhoek built a number of tiny microscopes with a variety of lenses.
Other
Leeuwenhoek's World of Microbes
This site has some history of van Leeuwenhoek (1632-1723 CE) with a description of his major accomplishments in the field of microbiology