If you look on the bottom half of the image above, you will see the main Exposition Building (constructed in 1872) when the State Fair took place in what was to become Morton Place. Subsequently, the area became the north part of Herron-Morton Place Historic Neighborhood. The center of that building shows the main entrance into which Alabama Street dead ended. The building’s front ran along Exposition Avenue, today known as 19th Street. It was designed by Edwin F. May, who was also the original designer of Indiana’s State Capitol building. The Exposition building’s dimensions were 300 feet across the front and 150 feet deep.
Photo August 2009, the intersection of 19th and Alabama Streets, looking north. If you were to close your eyes in 2009 and open them in 1869, somewhere around where that yellow dividing line begins, you would have entered the main exposition hall.