As many of you know, Berg based his Lulu opera on Frank Wedekind's Lulu plays. Pabst's version of Lulu, Pandora's Box - a film staring Louise Brooks, came in between.
I was most familiar with Perle's work as an author and musical scholar. Perle wrote The Operas of Alban Berg (1980 and 1985), a two-volume study widely regarded as the definitive analysis of Berg's operas. I have a copy of the second volume, which is devoted to Lulu.