Dave Langford has been assembling ebooks from fannish writings, including TAFF trip reports, columns from Walt Willis and John Berry, back issues of Ansible and elsewhere.
All free, though a donation to the Trans-Atlantic Fan Fund (TAFF) is suggested.
These ebooks include some of the funniest pieces written in a long time. I particularly enjoyed the Walt Willis Fanorama columns from Nebula in the 50s.
ebooks at http://taff.org.uk/ebooks.php