The Baltimore Catechism is also available online:
http://www.catholic.net/baltimore_catechism/template_channel.phtml?channel_id=14
Whoops! My link went to nowhere. Here are other Baltimore Catechism online links:
http://www.truecatholic.org/baltcont.htm
http://www.sacred-texts.com/chr/balt/index.htm
http://www.cin.org/users/james/ebooks/master/baltimore/bindex.htm