Klaus Voormann Original Drawing/Beatles related

Hello, this is my pride and joy, an original drawing by Klaus Voormann. It is a drawing of Klaus, John Lennon, Eric Clapton and Allen White on the infamous plane trip to the Toronto Peace Festival. It is widely believed by most experts that it was on this flight that John told Eric Clapton that he was leaving the Beatles. The drawing has personal notation by Klaus of exactly what the drawing depicts and a slightly humorous message to myself. It is signed by Klaus and is truly a rare and extrememly important piece of history. I haven't quite decided how I'm going to present it yet, or whether I'm going to back it with acid free paper or not(most likely I will), then possibly mat and frame it. Right now I store it in an acid free poly sleeve. It is truly a one of a kind item and speaks for itself.