You can now own N.W.A.'s receipt book from the time of their Detroit "riot"

Is this the perfect holiday gift for an old school hip-hop/ Detroit history fan? It just might be. It also might be a bit steep, price-wise, as the estimates place its auction price at between $3,000 and $5,000. Mt's Lee DeVito wrote about N.W.A.'s Detroit riot here, FYI.

We were tipped to the auction at the specialty site Bonhams via Kristen Gallerneaux, who might have one of the coolest jobs in the whole area —"Curator of Communication and Information Technology" at the Henry Ford Museum— on her personal Facebook page.
Up for auction: NWA's receipt book. "An intriguing internal record of three weeks in 1989 leading up to the famous August 6 concert in Detroit, when city police warned the band not to perform their most famous tune, "Fuck tha Police." The authorities claimed they were worried that the song might incite violence, so when, in defiance of the police, the band closed the show with a few lines from the song, officers rushed the stage and began dismantling amplifiers. The band was whisked away by security to their hotel, and were only detained later when they sneaked down to the lobby to meet girls."
Also, we eagerly anticipate the day when this song is not timely, appropriate, and valid.