sentences:  For the bridge's 75th anniversary in 2012, the Parks Conservancy, in partnership with the National Park Service and the Golden Gate Bridge, Highway and Transportation District, oversaw several celebratory projects to commemorate its opening.These organizations partnered with companies such as the "San Francisco Chronicle" and Twitter, as well as Genentech and Wells Fargo to commemorate the event.Steering committee members included notable Bay Area leaders and residents, while members of the Honorary Committee included Jack Dorsey, the CEO of Square, Inc.; Chip Bergh, the CEO of Levi Strauss & Co.; and Frank Vega, former publisher of the "San Francisco Chronicle."