As mentioned previously in my Chronicles of Narnia post, I tend to be a bit pedantic about reading series in order. That's why it is incredibly frustrating for me when I find my libraries have bits and pieces of series! I am a member of three libraries and I still have troubles getting books!
For example, not too long ago I read Something's Cooking by Joanne Pence, the first book in her Angie Amalfi series. The book wasn't a bad read so I thought that I would follow through on reading the series. Umm...maybe not. The library had the first book in the series and then all the others except the second, fifth and tenth books, and neither of the other two libraries any of the books in the series at all! So far I haven't gone onto read more of this series because I just can't without reading book number two, and I am not all that keen on ordering it in from the US!
Example number two - I really enjoy the Ursula Blanchard mysteries by Fiona Buckley. The same library as above had books 2,5, 6, 7 and 8. Another library has books 2 and 8, and the other has 1, 2, 3,5 and 6. No one has book 4. I ended up ordering that in from America, and then donating it once I read it to the first library! They better darn well keep it is all that I can say!!