This week in September marks the anniversary of the Grateful Dead’s first appearances in Colorado, at Denver’s Family Dog and a “Human Be-In” in City Park in 1967. To celebrate, David Gans, the foremost authority on the Grateful Dead and friend to CoME, will livestream a concert on his Facebook page at 5 p.m. MST on Saturday, Sept. 19. That same day, “Through the Cool Colorado Rain,” CoME’s mini-documentary chronicling the band’s storied history in Colorado, will premiere on this site. Both events are sponsored by Terrapin Care Station.