oz.Typewriter: On This Day in Typewriter History (CXII)
John J Deas: Scotland's typewriter pioneer
In America, the manufacture of the Caligraph had meanwhile passed into the hands of the Union Tywriter Co., which brought the 1900 New Century
Very Rare Machine IN Typewriter Caligraph – New Century 6 Typewriter Early 1900
Caligraph 2 Typewriter - Antique Typewriters
Antique American Caligraph New Century Typewriter No. 5, Year 1900.
Rare The Caligraph Typewriter 1880s American Writing Machine Co New York
Commercial Visible typewriter - 1898 - New York
The Story of the Typewriter
SLK Museo
Typewriter Museum
Caligraph 2 Typewriter - Antique Typewriters
Caligraph 2 typewriter by American Writing Machine Company, 1882. – L'authentique - Musée boutique