Christmas cards for companies and professionals working in the field
of plumbing, roofing, slating, electrical engineering and telecommunication

544

The Plumber/Roofer. Antique tools from a private collection.

545

The Plumber I. Antique tools from a private collection.

546

The Slater. Antique tools from a private collection.

547

The Plumber II. Antique tools from a private collection.

548

The Plumber III. Antique tools from a private collection.

580

Electricity for household use in the twenties.

581

Early electricity. Devices used in the twenties.

582

Early electricity. An electrostatic machine for generating high voltages, developed by the British inventor James Wimshurst (1832-1903). To the left: an electric egg.

586

An Ericsson wall telephone and the Dutch telephone directory, both dated 1905.

587

An Ericsson tabletop telephone of the year 1892.

588

The Telegraph with Key. The invention that revolutionized communication around the world.

589

The Stock Ticker (Manhattan ticker tape parade!). A monument to the stock exchange, for it is through the instant dissemination of the quotations that the active and continuous interest in de markets is sustained.