Barbra Jensine Dorthea Olsen (born 1833)

In 1833, in the year that Barbra Jensine Dorthea Olsen was born, on April 18th, over 300 delegates from England, Scotland, Wales and Ireland called on the office of the Prime Minister of Great Britain to demand the immediate abolition of slavery throughout the British Empire. Following this, slavery was abolished by the Slavery Abolition Act 1833 - with exceptions provided for the East India Company, Ceylon, and Saint Helena.

In 1904, the World's Fair, officially known as the Louisiana Purchase Exposition, was held in St. Louis, Missouri. Attended by nearly 19.7 million people (and later the subject of a Judy Garland film), the Fair was funded by federal, state and local sources to the tune of $15 million. As the name suggests, the Fair was suggested as a way to celebrate the Louisiana Purchase in 1803. In the past, World's Fairs were a way of bringing new technology to the attention of the masses and this fair was no exception - the use of electricity (the public feared it at the time), personal cars, airplanes, and the electric streetcar were all highlighted.

In 1910, Halley's comet, which returns past the earth every 75 - 76 years was observed photographically for the first time. Two fortuitous events occurred - photography had been invented since the last time the comet had passed and the comet was relatively close. There was panic because one astronomer claimed that the gas from its tail "would impregnate the atmosphere and possibly snuff out all life on the planet." People bought gas masks, "anti-comet pills" and "anti-comet umbrellas".

In 1929, on October 29th (Black Tuesday), the stock market crashed in the United States. Billions of dollars were lost and some investors committed suicide as a result, having lost their fortunes. This ushered in the 12 year, worldwide Great Depression.

In 1982, on September 14th, Princess Grace of Monaco (American actress Grace Kelly), 52, died of injuries when her car plunged off a mountain road. Her 17 year old daughter, Stephanie, was also in the car and suffered serious injuries but recovered. It's believed that the accident was caused when Princess Grace, who was driving, had a mild stroke.