Never-before-heard "embarrassment of riches" from the legendary rapper to come
Outfits and handwritten notes among the items
Saul Williams also states the musical was too adventurous for Broadway
'Holler If Ya Hear Me' will have its final performance on July 20, just one month after opening
Twitter Q+A brings denial from Central Intelligence Agency over dead rapper
The rapper was killed in a drive-by shooting in 1996
The play opens on Broadway in New York in June
Acotor, poet and musican will play the rapper in the non-biographical drama
'Hollar If Ya Hear Me' will open at the Palace Theater in New York on June 19
The film was originally set to start filming in 2011