When retiring state archivist Guy Rocha was studying for his master's degree at San Diego State, he stated that he wanted to go back to Nevada to become this state's best public historian.And if the more than 250 guests who showed up at the Carson Nugget on Saturday night to honor Rocha's 32 years of service to the state have anything to say about it, he achieved that goal " and then some. Rocha's achievements in documenting and communicating the history of Nevada are legendary. His quest to find the absolute truth about every historical Nevada event has led to …