Organizations

Antique Telescope Society - International organization of colleagues interested in antique astronomical telescopes, books, binoculars and related materials.

Canadian Historical Microscopical Society - Mission is to bring together private (and institutional) collectors of antique (and modern) optical instruments with particular emphasis on microscopes.

Scientific Instrument Society - Bringing together people with a specialist interest in scientific instruments, ranging from precious antiques to electronic devices only recently out of production.