Catholic Encyclopedia: Don Isaac Abrabanel: Short review of his life and writings, by Romain Butin.
Don Isaac Abravanel: Detailed information on the careers of this Jewish scholar and his son, from Maurice Abravanel.
Great Leaders of Our People: Don Yitzchak Abrabanel: Biographical article with an emphasis on the Judaic aspects of this thinker's career.
Isaac ben Judah Abravanel: Statesman, Financier, and Biblical Commentator: Biographical article from JewishGates.com.
The Alhambra Decree and Abrabanel's Answer: English-language text of the infamous 1492 edict expelling the Jews from Spain, and Isaac Abrabanel's reply.