Amazing Old Photo of San Francisco

I ran across an amazing old photograph of San Francisco bay and its docks. The wonderful thing about modern technology such as photography and subsequent storage thereof on the internet, is that we now have a much better perspective onto history than formerly. We even have photos of Abraham Lincoln available.

Another amazing piece of historical detective work is an old carbon soot on paper tracing of a person singing "Au Claire De La Lune". This was done long before the invention of the phonograph by Edison. The person who made it, Édouard-Léon Scott de Martinville, was investigating sound and never knew that modern technology from Lawrence Livermore Lab today would be able to replay the song.