Hebrew Books is a full-text database (PDF files) of titles by American Rabbis. Most of the titles are in Hebrew, but a few are in English or Yiddish. Pulldown lists of author, city, state, and subject as well as browse and word searches are provided. So far, most of the texts seem to have been published between 1880 and 2011. Although it does not require Hebrew fonts, it does require Internet Explorer/ Netscape 5 versions or higher. (Updated irregularly)
This permalink is a direct, persistent URL to the database that will always work and won't break.