It might just be the way firefox handles ampersands, but…
Right here:
http://mises.org/literature.aspxx?action=subject&Id=72
The link to “Power and Market: Government and the Economy” by Rothbard is dead.
Also, just as a general criticism: I notice that some of the HTML versions of literature have typos in them, because they appear to have been auto-generated from the PDF versions. Although it’s probably impossible, it would be a good idea to proofread the HTML versions.