File:Dioptrica Pratica by Carlo Antonio Manzini.jpg - Wikimedia Commons
Manzini hi-res stock photography and images - Page 4 - Alamy
PDF) Catálogo de la biblioteca de Ehrenfried Walther von Tschirnhaus
File:Optical lenses making process.jpg - Wikimedia Commons
PDF) International Bibliography of Gnomonica
PDF) Galileo Engineer Matteo Valleriani
Category:Lenses - Wikimedia Commons
The Bernard Becker Collection in Ophthalmology and Optics
Category:Lenses - Wikimedia Commons
Dioptrica Practica, c 1660 - c 1750
File:Portrait of Eustachio Divini in Dioptrica Pratica by Carlo Antonio Manzini.jpg - Wikipedia
Full article: A telescopic paradox: the artisans of the Accademia del Cimento, their instruments and their (in)visibility
The Spectacle according to the Eye: Practical Optics