The web site of the American College of Allergy, Asthma & Immunology (ACAAI) features many questions for board review: Review Corner Archive.
Allergy Podcasts and Videocasts by ACAAI
ACAAI has started publishing free podcasts/videocasts from the 2006 Annual Meeting.
ACAAI on-line Audio, Video and CD Store. Each board preparation audio lecture in MP3-format costs $ 15.
Journals and Newsletters
Journal of Allergy and Clinical Immunology (JACI)
Annals of Allergy, Asthma and Immunology