Find a Graduate Program, provides brief data about many of the advanced degree-granting departments in the U.S. Some graduate programs place display ads to better explain their programs to prospective students.
The annual Grad School Fair at the January Joint Mathematics Meetings gives meeting participants the opportunity to speak with representatives from 40 - 50 U.S. graduate programs.
List of Mathematical Sciences Graduate Programs in the U.S. is taken from survey groupings.
Discussions of graduate student life - by and for graduate students - can be found on the AMS Grad Student Blog.
The National Physical Science Consortium offers graduate fellowships in the physical sciences, with special emphasis toward the recruitment of underrepresented minority and female physical science and engineering students.
PhDs.org Science, Math and Engineering Career Resources contains advice and data about graduate programs in mathematics.