By Eric Gorski for the Denver Post

In a warehouse district of northeast Denver, right next to a post office, the Williams family is building the Costco of weed.

Nine relatives from three generations work behind the bulletproof glass at Medicine Man, which opened in 2010, grew into one of the state’s largest medical marijuana dispensaries and has aspirations of becoming a national brand if pot legalization continues its march.

Read more: Family’s business ambitions: Become Costco of marijuana | Denver Post.