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Antique Telescope Society - http://www.webari.com/oldscope/
International organization of colleagues interested in antique astronomical telescopes, books, binoculars and related materials. |
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Scientific Instrument Society - http://www.sis.org.uk/
Bringing together people with a specialist interest in scientific instruments, ranging from precious antiques to electronic devices only recently out of production. |
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Canadian Historical Microscopical Society - http://www.geocities.com/CapeCanaveral/Hangar/5485/index.html
Mission is to bring together private (and institutional) collectors of antique (and modern) optical instruments with particular emphasis on microscopes. |