Antique microscopes (http://www.antique-microscopes.com/siteindex.html)

Antique microscopes and other antique scientific instruments (http://www.microscope-antiques.com/index.html)

Antique Optics (https://antiqueoptics.eu)

Bononiae Microscope (https://www.bononiaemicroscope.com/en/)

Brass & Glass - Vintage and Antique Microscope Restoration (https://brassandglass.co.uk/; https://brassandglass.blog/)

Collection of Historical Scientific Instruments - Harvard University (http://waywiser.fas.harvard.edu/search/microscope)

Coleccion Carrascal (http://www.ranm.es/lente/Microscopios/microscopios.htm)

Coleccion Perea Borobio (http://www.perea-borobio.com)

Historical Microscope Collection – East Carolina University (https://digital.lib.ecu.edu/search.aspx?q=collection:Historic+Microscope+Collection&pg=1)

Goren Collection of the History of the Microscope (https://www.microscopehistory.com)

Historical Makers of Microscopes and Microscope Slides (http://microscopist.net)

Historical microscopes (http://stichtinghistorischemicroscopie.nl/en/microscopen/?jaartal=&maker=417&cat2=&land=)

Jeroen Meeusen, A collection of 19th century Continental microscopes and related items (https://www.meeusen.com)

Le Compendium (http://www.lecompendium.com/dossier_optique_0_themes/page_thematique_optique_2.htm)

Little Imp Suite of Books and Catalogues on Microscopes / Microscopy (http://www.microscopy-uk.org.uk/Little-Imp/index.html)

Microscopios s.XIX (https://www.microscopiosantiguos.net/)

Molecular Expressions – Optical Microscopy Primer (https://micro.magnet.fsu.edu/primer/index.html)

Muséée des Arts et Métiers, Paris (https://www.arts-et-metiers.net)

Museo Galileo – Microscopes (https://brunelleschi.imss.fi.it/museum/esim.asp?c=500148)

Museum Optischer Instrumente (https://www.musoptin.com/mikroskope/)

National Museum of American History microscope collection (https://americanhistory.si.edu/collections/search?return_all=1&edan_local=1&edan_q=microscope)

National Museums Scotland online collections database (http://nms.scran.ac.uk/database/results.php?offset=1&no_results=12&scache=371ju8422z&searchdb=scran&sortby=title&sortorder=ASC&field=&searchterm=%2Bmicroscope&PHPSESSID=vnerd1s9e4am7cl919pvl4fmh3)

Science Museum Group – Microscopes (https://collection.sciencemuseumgroup.org.uk/search?q=microscope)

Scientific Instruments Collection of Dr. Guillermo Crovetto (https://www.coleccioncrovetto.com/home)

Stichting voor Historische Microscopie (http://stichtinghistorischemicroscopie.nl/microscopen/)

The Billings microscope collection (https://www.medicalmuseum.mil/index.cfm?p=collections.historical.areas.microscopy)

The Golub Collection (http://golubcollection.berkeley.edu)

The Moody Medical Library's Collection of Historical Microscopes (https://www.utmb.edu/ar/moody-medical-library/blocker/artifacts/microscope-collection)

Toute l’histoire du Microscope (http://histoiredumicroscope.com/la-collection/)