Hoofdletters, Tweeling- en Meerlingdruk was a Dutch book published in 1958. In the book, author Dr. George van den Bergh made several propositions for a more economical arrangement of type in books. The book was featured in Herbert Spencer

Herbert Spencer (graphic designer)

Herbert Spencer was a British designer, editor, writer, photographer and teacher, born in London on June 22, 1924, and died March 11, 2002 ....

's Typographica

Typographica

Typographica was the name of a journal of typography and visual arts founded and edited by Herbert Spencer from 1949 to 1967. Spencer was just 25 years old when the first Typographica was issued....

(Old Series, number 16, 1959) in and Eye magazine

Eye (magazine)

Eye Magazine, The International Review of Graphic Design is a quarterly print magazine on graphic design and visual culture.- History :...

 (no. 47, vol. 12, Spring 2003). http://www.eyemagazine.com/feature.php?id=85&fid=451 In Rick Poynor

Rick Poynor

Rick Poynor is a British writer on design, graphic design, typography and visual culture. He began as a general visual arts journalist, working on Blueprint magazine in London. After founding Eye magazine , which he edited from 1990 to 1997, he focused increasingly on visual communication...

's Typographica he translates the Dutch title as "Capitals, twin- and multi-print."

There were three principles in van den Bergh's proposals. The first was that printing in all caps (Hoofdletters in Dutch means uppercase letters) would save the space wasted by the ascenders and descenders of lowercase letters. The second principle involved double printing texts that could be screened by overlaying sheets that masked every other line of text. The third principle involved double printing texts in red and green: the reader could then read through red or green "spectacles" that filtered out one text.

Erik Kindel, author of the 2003 Eye article sums up with a contemporary evaluation of the book: