File:Dioptrica Pratica by Carlo Antonio Manzini.jpg - Wikimedia Commons

The Bernard Becker Collection in Ophthalmology and Optics

PDF) Galileo Engineer Matteo Valleriani

PDF) Galileo Engineer Matteo Valleriani

Manzini hi-res stock photography and images - Page 4 - Alamy

The emergence of modern astronomy – a complex mosaic: Part XXXIV

PDF) Catálogo de la biblioteca de Ehrenfried Walther von Tschirnhaus

PDF) Labour on lenses Fokko Jan Dijksterhuis

PDF) Catálogo de la biblioteca de Ehrenfried Walther von Tschirnhaus

Full article: A telescopic paradox: the artisans of the Accademia del Cimento, their instruments and their (in)visibility

PDF) International Bibliography of Gnomonica

Full article: A telescopic paradox: the artisans of the Accademia del Cimento, their instruments and their (in)visibility

File:Optical lenses making process.jpg - Wikimedia Commons

Category:Lenses - Wikimedia Commons

Manzini hi-res stock photography and images - Page 4 - Alamy

Category:Lenses - Wikimedia Commons