Complete acting dialogue
http://www.public.iastate.edu/~spires/Concord/deathfull.html
for Death of a Salesman (not a full e-text, for it does not have stage directions).
Information about the text
http://hsc.csu.edu.au/english/teaching/materials/ref_lib/171/salesman/
including issues, questions and activities, themes and characters, and biographical information on Arthur Miller.
PBS News
http://www.pbs.org/newshour/bb/entertainment/jan-june99/miller_2-10.html
An interview with the playwright.