Photograph of streetcars and spectators on the First Street Bridge during the opening of the cable railway to Boyle Heights, Los Angeles, August 1, 1889. Two men in the foreground are pictured walking away on the plank bridge from the two streetcars behind them. Passengers are packed into the American-flag decorated cars, while others sit on and along a chain link fence to the left. A horse-drawn carriage makes its way down the bridge towards the camera in the right background. Horse droppings can be seen to the left on the bridge. A caption below the image identifies the cause for celebration.