Initial attempts by academic librarians to build e-book collections may be seen to have certain parallels with the traditional Grail quest. Like the knights of old, we know what it is we seek, but there are many challenges to be overcome before we can achieve our goal. Changes in teaching and learning methods, expanding student numbers, and the growth of CPD are amongst a number of key factors which are driving librarians' pursuit of e-textbooks. The success of e-journals means that many users now expect 24-7 access to a much wider range of library resources. Thus far, the market has been comparatively slow to respond. We need better dialogue with publishers to identify the e-book content which libraries and their users want, together with further work on licensing models and usage data. Only then may our quest be fulfilled.