UNION, Ill. (WLS) -- The Grateful Dead are coming alive with an auction happening April 11-12 in Union at the Donley Auction House . More than 700 items from the Grateful Dead's private collection are now going to the highest bidder. It's the largest collection of Grateful Dead memorabilia ever assembled. Whether you're a "Dead Head" or a rock 'n' roll collector, you're sure to find something.The auction features artifacts spanning the entire career of the legendary American band. The collection includes pieces of Jerry Garcia's original artwork, business documents, original Stanley Mouse and Rick Griffin artwork, previously unseen photographs, rare vintage posters, office furniture and more. Items are accessible for all levels of collectors with opening bids ranging from $50 to $500,000.Randy and Shawnah Donley from Donley Auction Services dropped by our ABC 7 studios to share several rare pieces up for auction.Noon on April 11-128512 S. Union RoadUnion, Ill.Admission: $25