Ada Byron Lovelace  
   Portrait, biographical facts, and anecdotes.
   http://www.aimsedu.org/Math_History/Samples/ADA/Ada.html

Ada Byron King, Countess of Lovelace, 1815-1852  
   Links and references.
   http://www.cs.yale.edu/homes/tap/ada-lovelace.html

Ada Lovelace: Founder of Scientific Computing  
   Biography and portrait.
   http://www.sdsc.edu/ScienceWomen/lovelace.html

The Ada Picture Gallery  
   Includes a selection of portraits of Ada, Countess of Lovelace.
   http://www.cs.kuleuven.ac.be/~dirk/ada-belgium/pictures.html

Ada Byron, Lady Lovelace  
   Brief biography, by Dr. Betty Toole, along with a portrait and links.
   http://www.agnesscott.edu/lriddle/women/love.htm

Tools For Thought: The First Programmer Was a Lady  
   By Howard Rheingold. Online copy of well known 1985 book on the invention of modern computing; this chapter on Lady Ada Lovelace, Charles Babbage, Difference and Analytical Engines. Newer (c)2000 edition of the book is out, with follow-up interviews.
   http://www.rheingold.com/texts/tft/2.html

The Babbage Pages: Ada Lovelace  
   Brief biography with references.
   http://www.ex.ac.uk/BABBAGE/ada.html

Ada: The Enchantress of Numbers  
   Comments on her, and her work, from a selection of people and publications in the field.
   http://www.well.com/user/adatoole/

Augusta Ada King Countess of Lovelace  
   Short biography and four portraits.
   http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Lovelace.html

Happy Birthday Ada  
   Biography and small portrait.
   http://www.adahome.com/articles/1997-12/al_birthday.html

Women in Mathematics (Ada Lovelace)  
   Biography by Marni Mishna.
   http://www.mathnews.uwaterloo.ca/BestOf/WomenInMath7103.html

Ada Lovelace  
   Portrait and biography.
   http://www.westga.edu/~cs/gallery/daemon.htm