Yeah Allen longs book is a good one. I also recomend
Martin Torgoff's "can't find my way home"
it covers the whole drug culture from
1944 upto present day.

ANYTHING BY HUNTER S. THOMSON
Better than sex
Fear and loathing in lasvagas
Fear and loathing on the campeign trail
The Rum Diary
Hells angels
Are all grate books