Office work in 1920:

Office workers at their desks at the beginning of the twentieth century writing quotes.

The "Hindenburg" temple:

In 1926 Menrad succeeded with a revolutionary invention in the field of adjustable temples, the so-called "Hindenburg" temple, named after the most famous wearer of spectacles with these particular temples, German Chancellor Hindenburg.  The temple was infinitely length-adjustable by simply undoing a screw head.

The production:

In 1927 Ferdinand Menrad, jun. takes over the management of the company and the responsibility for its 110 employees.  Even in those days Menrad already offered a comprehensive collection with more than 300 spectacle frames.