UPDATED: July 2014. Please report dead links. Thanks.
Baha'i Faith (4TruthNet)
BAHA'ISM by Paul Seiler (Christian Library Australia)
ARTICLES -'CHRISTIAN FAITH'
'The Bahai Faith' by Adrian van Leen (Lookout). This is an article that explores who Bahais are and what they believe. (The article can be downloaded as a free pdf file).
'The Virtues Project' by Adrian van Leen (Lookout). (The article can be downloaded as a free pdf file).
An open letter to a follower of the Baha'i faith (Christian Answers).
Bahai -Truth? (All About Religion).
'The Religion of Baha'i - What Does a Baha'i Believe' by Lou Whitworth (Probe Ministries).
Has an excellent series of articles on Baha'i HERE. Highly recommended.