 A poet as well as an artist, words featured heavily in his drawings and paintings, with direct references to racism, slavery, the people and street scene of 1980s New York including other artists, and black historical figures, musicians and sports stars, as his notebooks and many important drawings demonstrate.Often Basquiat's drawings were untitled, and as such to differentiate works a word written within the drawing is commonly in parentheses after "Untitled", such as with "Untitled (Axe/Rene)".After Basquiat died of an overdose at the age of 27, his estate was controlled by his father Gérard Basquiat, who also oversaw the committee which authenticated artworks, and operated from 1993 to 2012 to review over 1000 works, the majority of which were drawings.