1. On July 28, 1866, Chicago's first public zoo, the Lincoln Park Zoo, opened its doors to the public. The zoo remains one of the oldest and most popular attractions in the city, home to over 200 species of animals.

2. In 1896, on July 28, the town of Streator, Illinois became the site of one of the first documented sightings of a UFO in the United States. Witnesses reported seeing a glowing object in the sky that descended to the ground and disappeared. The incident is still shrouded in mystery and debate among UFO researchers.

3. On July 28, 1932, gangster John Dillinger was shot and killed outside the Biograph Theater in Chicago by FBI agents. Dillinger had been one of America's most wanted criminals at the time, and his death marked a major victory for law enforcement.

4. In 1945, on July 28, a B-25 bomber crashed into the Empire State Building in New York City, killing 14 people and injuring many more. The plane's pilot had become disoriented in heavy fog and crashed into the building's north side.

5. On July 28, 1998, the last Oldsmobile automobile rolled off the assembly line at the Lansing Car Assembly plant in Lansing, Michigan. The Oldsmobile was one of America's oldest and most iconic car brands, but had been struggling financially for years and was eventually phased out by General Motors.