This book offers an unprecedented, comprehensive overview of Banksy’s elusive time (August 2008) in New Orleans, focusing on the aftermath of Hurricane Katrina and the
subsequent fate of the 17 art pieces he left behind. The author, a self-proclaimed caretaker of Banksy’s Umbrella Girl for over a decade, spent countless hours researching, making calls, and pursuing leads to compile this collection of often-hearsay accounts and photographs. Banksy’s works in New Orleans, including the Umbrella Girl, are widely regarded as a commentary on the devastation caused by Hurricane Katrina in 2005 and the government’s response.The author’s role as caretaker involved continuous maintenance and protection of the Umbrella Girl from various forms of vandalism, providing a unique vantage point to
connect with diverse individuals in New Orleans. The book acknowledges the difficulty in verifying information due to Banksy’s mysterious nature and emphasises that the
included images are not definitive proof of attribution or even of Banksy’s existence. Ultimately, the aim is to provide an enjoyable and insightful exploration of Banksy’s New Orleans legacy in the context of the city’s post-Katrina recovery, while paying tribute to the disaster’s 20th anniversary.

You can also read about it here:

And:

Creative Boom