The Github repository containing these notebooks is https://github.com/clawpack/riemann_book.
You can view html versions of these notebooks at http://www.clawpack.org/riemann_book/html/Index.html.
Parts I and II of these notebooks will also be published by SIAM as a paperback book.
Please read about the License if you wish to use or modify this material.
Additional notebooks are under development and listed in Index2.html. Updates may appear in the Github repository in the future.