Isabella II
- A biographical sketch of the second Spanish ruler named Isabella, whose succession led to war.
- http://womenshistory.about.com/library/bio/blbio_isabella_ii.htm

Exhibition Albert and Isabela
- Includes general information, pictures, drawings, and music regarding the Spanish Low Countries at the time of the archdukes.
- http://win.straatvaart.com/collection/AI/

Isabella I of Spain
- An illustrated biography and links to more information.
- http://womenshistory.about.com/library/bio/blbio_isabella_i_spain.htm

Sor Juana Inés de la Cruz Project, The
- Consists of an electronic edition of her complete works based on the text of Adolfo Méndez Plancarte and Alberto G. Salceda.
- http://www.dartmouth.edu/~sorjuana/

Letters of Philip II, King of Spain, 1592-1597
- These letters from Philip II, King of Spain, mainly to Don Diego de Orellana de Chaves, Royal Governor of Spain's northern coast, date from the time of naval war against England and France, 1592-1597.
- http://library.byu.edu/~rdh/phil2/