Beatty, Nevada, United States
We are specialists in antiquarian science and technology, with an emphasis on 19th and early 20th century books on scientific instruments, the physical sciences, psychology and philosophy.
Hastings-on-Hudson, New York, United States
Founded in 1982, TESSERACT is a full-time business selling early scientific and medical instruments and related books. We sell by printed catalogue, and on-line, and have supplied rare objects and books to museums, collectors, and dealers worldwide.-- David & Yola Coffeen, Ph.D.'s