Eastman Kodak No.1 Autographic Kodak Jr./Rapid Rectilinear

Eastman Kodak No.1 Autographic Kodak Jr.
Rapid Rectilinear Bausch & Lomb Optical Co.
Kodak Ball Bearing Shutter
120 / 6x9cm
1920

Dallmeyer Rapid Rectilinear 1866

 Steinheil Aplanat 1866

https://commons.wikimedia.org/wiki/File:RR-Aplanat-text.svg
http://throughavintagelens.com/2009/09/the-rapid-rectilinear-lens/

http://www.wikiwand.com/en/History_of_photographic_lens_design