Microscopy UK (Web Home of Microscopy for Enthusiasts)
http://www.microscopy-uk.org.uk/full_menu.html
The third column of this link-rich site is of most interest: Introductions to Microscopy, School Biology, What's a Cell?, and others. 

 

History of the Light Microscope
http://www.utmem.edu/~thjones/hist/hist_mic.htm
From the Early History of the Lens to The Microscopes of the 19th Century.

 

Brian J. Ford's Discovery of Leeuwenhoek's Original Specimens
http://www.sciences.demon.co.uk/wavintr.htm
Brian Ford discovered actual samples prepared by van Leeuwenhoek, which had been hidden amongst other materials in the Royal Society's archives for several centuries. Now, for the first time, we are able - using one of the few existing original van Leeuwenhoek microscopes and his own prepared samples - to see precisely what van Leeuwenhoek saw.

 

Eukaryote Organelles
http://www.mrs.umn.edu/~goochv/CellBio/lectures/euk/euk.html
Lots of information, in the form of brief notes, on eukaryotic cells.

 

Biogenesis and Abiogenesis (1870)
http://aleph0.clarku.edu/huxley/CE8/B-Ab.html
Thomas Huxley's disquisition on the hypothesis of biogenesis, the arising of life from other living matter, and that of abiogenesis, the production of life from dead matter.

 

 

Cell Biology Web Pages
http://www.cytochemistry.net/Cell-biology/Cell%20Biology%20handouts
Illustrated handouts to go with lectures in cell biology, as well as links to some informative sites.