A look back at national, state and local history from this week in years past.
National History - various sources
July 16, 1945 - The Trinity Test - The first detonation of a nuclear weapon was conducted by the United States Army at a site south of Los Alamos, N.M.
July 17, 1955 - Disneyland Park in Anaheim, California officially opened. July 20, 1969 - Neil Armstrong and Buzz Aldrin became the…