Mathematical Tables and Other Aids to Computation: A Quarterly Journal. 3-4. National Research Council. (1948). pp. 558-. https://books.google.com/books?id=89I0AAAAIAAJ. "Since on page 5 of 2 there seems to be definite reference to the Rheticus sine canon being in the hands of ... After his discovery of the new Rheticus tables Pitiscus started to prepare a second work which was finally published in 1613 and contained the following four parts. ... The volume title-page, in black and red, begins Thesaurus Mathematicus sive Canon Sinuum ad radium 1.00000.00000.00000."
Breusing, A. (1881) "La toleta de Martelojo und die loxodromischen Karten", Zeitschrift für wissenschaftliche Geographie, vol. II, Pt. 1 (pp. 129–33), Pt.2 (pp. 180–95).