A narrative text of taped slide lecture for general audience. "The Rittenhoufe Orrery" by Stephen Kramer, January 1980 An original composed work. Organized and edited to be delivered orally. Higher quality images and a slide show can be viewed at http://picasaweb.google.com/111566365189520789033/TheRittenhoufeOrrery?authkey=Gv1sRgCNPtrOS35PjvwwE&feat=directlink#5438168626573177858 Stephen Kramer's Member Profile - http://www.rittenhousesociety.com/apps/profile/profilePage?id=51895038
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