British scientist Brian J. Ford has rediscovered some of Leeuwenhoek's original specimens in the archives of the Royal Society of London. His study of these historic specimens and other material, using Leeuwenhoek's own microscopes and other single-lens microscopes, has shown how remarkably good a scientist and craftsman Leeuwenhoek really was. Here's the full story of Dr. Ford's research.
Berkeley, California resident Al Shinn manufactures replicas of Leeuwenhoek microscopes. He has also made plans and instructions available, for those who would like to make their own Leeuwenhoek-type microscopes.