I just saw this interesting tidbit about the lost treasures of Dave Arneson thanks to this piece by GeekDad over at Wired News.
His original gaming dice. His original Dungeons & Dragons and Blackmoor campaign manuscripts. His first printing, woodgrain boxed set play copy of D&D. Letters from Gary Gygax. Other letters, notes, documents, artwork, photos, cartography, rare wargames and hand-made models and miniatures. And more.
All these items were once written, crafted or owned by Dave Arneson, gaming legend and co-creator of D&D. But when Arneson died in 2009, his personal archives and game collection become lost. In 2011, they were found, in an abandoned storage locker in Minnesota.