Weatherman, also known as Weathermen and later Weather Underground Organization, was an American militant organization that carried out a series of bombings, jailbreaks, and riots from 1969 through the 1970s. In a letter, the WUO claims credit for bombing of the San Francisco Hall of Justice, although no explosion has occurred. Months later, workmen locate an unexploded bomb.

Photo is dated 1971.

Photo measures 8 x 10.25 inches.