sentences:  Founding students included Sandy Frucher, Hillel Goldberg, Arthur Green, Dennis Prager, Glenn Richter, Benjamin Silverberg, James Torczyner, and Sanford Zwickler.After some years, Richter gave up his law studies and joined Birnbaum full-time to become National Coordinator in which capacity he served until January 1990.Originally Birnbaum's fastest typist, he assumed the bulk of SSSJ's administrative routines, and became well known for his small "rapid response" demonstrations, his informative press releases, and together with Allan Miller, the compilation of massive lists of prisoners of conscience and refuseniks.