All prices are in US dollars.
The entire content of Visual Dictionary of Special Plane Curves site. $49.
The complete site also contains all of the following items.
60 GeoGebra files. $15.
110 Geometer's Sketchpad files. $20.
24 Cabri II Geometry files. $5
6 Mathematica packages and 70 Mathematica notebooks. $10
(The Mathematica files are of Mathematica version 4, but should work with Mathematica 7 or 8.)
60 Graphing Calculator files. $10
Complete scanned version of Robert C Yates's Curves and Their Properties book. A 245-page classic. $10.
See: Printed Citations to XahLee.org and XahLee.org Site Awards and Recognition.
I can be contacted thru email at “xah@xahlee.org” or “xahlee@gmail.com”
Once i got the payment, i'll send you a link to download, within a day.
Note: The files are sold for personal use only or reasonable educational use. You may not republish it. Please contact me if you are interested in a site license.