1st February Blue Moon

Recently some of us had the experience of seeing a blue moon. It is not something I thought much about, but was surprised by the number of requests for books about a blue moon. I could find small amounts in books about the moon, but very quickly realised the best place to look was on the web at sites like the ABC. However it was a good excuse to talk about the adage 'once in a blue moon' and what it means and I discovered three fiction titles that helped support the concept.