Robert A. Heinlein Blood Drive at Comic-Con International 2013
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The Comic-Con International/Robert A. Heinlein Blood Drive took place at the Omni San Diego Hotel in 2013. HBO and True Blood provided gift items for those who donated blood. Over the 37 years Comic-Con has held this event, close to 14,000 units have been donated.

Photo by Rudy Manahan © 2013 SDCC