National Sculpture Society
The purpose of the National Sculpture Society (NSS) is to promote excellence in figurative and realist sculpture throughout the United States, to which end its programs are directed. NSS is a not-for-profit organization whose membership includes some of the world's finest sculptors, architects, art historians, conservators, and other allied professionals. The first sculpture exhibition in the United States was staged by NSS in 1895. The NSS publishes Sculpture Review on a quarterly basis, which is often referred to as the foremost figurative sculpture magazine in the world. In 2007, both the fiftieth anniversary of the magazine and the seventy-fifth annual exhibition of the society occurred.
I've been using Koh-I-Noor Rapidograph Technical Pens since 1969. My aunt bought me my first set when I was 12 and I have used them daily ever since. I love the fact that I can mix my ink colors to match my watercolor or my wardrobe and use "Pelikan Drawing Ink A" almost exclusively. Though the inks made by Koh-I-Noor and Winsor Newton are satisfactory.
If you are a beginner, I would NOT recommend purchasing anything smaller than an 0 (0.35 mm). Even as a professional I find cleaning a 4x0 to be a challenge. I work most often with a 2x0, and find them to produce the smoothest flow, if kept clean.