The MacTutor History of Mathematics archive
Earliest Known Uses of Some of the Words of Mathematics
Links to Web Sites on the History of Mathematics at BSHM website
Canadian Society for History and Philosophy of Mathematics
History of Mathematics web sites by David Calvis
History of Mathematics at California State University
History and Pedagogy of Mathematics
The Practice of Mathematics - Lectures by Robert Langlands
History of Mathematics links by David Wilkins
National Science Digital Library
Cornell University Historical Math Monographs
The University of Michigan Historical Mathematics Collection
Museum of Mathematical Models in Modena
MoMath: The Museum of Mathematics
Museum of the History of Science (Oxford, UK)
Electronic Archive of Geometric Models
Historical Scientific Instrument Gallery
The Collection of Historical Scientific Instruments at Harvard University
History of Geometry Bibliography
Greek Mathematics and its Modern Heirs
Oliver Byrne’s edition of Euclid’s Elements
Ptolemy’s Table of Chords – Trigonometry in 2nd century
Leonardo and Renaissance engineers
The Art of Rennaisance Science
Muslim founders of Mathematics
Catalog of Scientific Communities in 16th and 17th centuries
Mathematicians of 17th and 18th centuries
Le Patrimoine de l’Ecole Poytechnique
Hilbert’s Mathematical Problems
The Mathematical Problems of David Hilbert
Chronology of Recreational Mathematics
Henri Poincaré's student notebooks, 1870-1878
Codes and Ciphers in the Second World War
The Pentagramm and Golden Ratio
Golden Ratio and Fibonacci Numbers
this is so popular topic that you can find hundreds of pages about the golden ratio with Web search
The International Society of Arts, Mathematics and Architecture
Symmetry and Pattern: The Art of Oriental Carpets
Sacred Geometry of Great Pyramid
sacred geometry is another topic widely represented on Web
Islamic Art in Metropolitan Museum
Islamic Arts and Architecture organization
M. C. Escher- the official website
these are links I collected when I was teaching "History of Mathematics" and "Mathematical Explorations" classes. Thank you for using them but I am not adding much to this collection since the time when I first made this list search options have grown tremendously - so if you think there should be more specific links - please make your own collection. occasionally I am checking for broken links.
last links checked January 2, 2015