AN INVALUABLE RESOURCE - We will certainly be buying one at some point

http://www.birdguides.com/estore/p-823-bbiii-british-birds-iinteractivei.aspx

100 years of British Birds magazine on a single disk, with searchable PDFs so you can search locate any article, note, letter or picture on any species or location. BBi is a multimedia DVD-ROM that provides instant access to every article, every photo, every illustration ever published in the journal British Birds since its launch in 1907. The entire 100-year archive is fully searchable by species, author, photographer, location or topic as well as by date of publication, so can quickly find, for example:

All the photos of any species
All the illustrations by any artist
All the letters by any author
All the articles on any topic, e.g. identification
All the BBRC rarities reports
All mentions of your own name!!