The Space Systems Lab at MIT, where I went to college, has reorganized their web-site, and made available PDF files of many of the theses from the grad students. One of them happens to be Comparative System Trades Between Structurally Connected and Separated Spacecraft Interferometers for the Terrestrial Planet Finder Mission, my 1998 Master of Science thesis. Very cool.
Also, two other theses dealing with the Terrestrial Planet Finder are there: Reliability and Productivity Modeling for the Optimization of Separated Spacecraft Interferometers by Julie Wertz, who now works at JPL as well, and Interferometer Architecture Trade Studies for the Terrestrial Planet Finder Mission by Brian Makins. SSL is the the place to be for TPF work!