The Great Fountain from Machinery Hall. Columbian Exposition.

The Great Fountain from Machinery Hall. Columbian Exposition.

The Great Fountain from Machinery Hall. Columbian Exposition.

McMonnies Fountain. Columbian Exposition.

Electric button pressed by President Cleveland to unfurl flags and start machinery at the Columbian Exposition.

Romance of the lagoon. Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

From every land they come to the opening of the Columbian Exposition.

The surging sea of humanity at the opening of the Columbian Exposition.

The lagoon and islands. World's Fair.

Esquimaux sledge and dog team. World's Fair.

Esquimaux and their summer home. World's Fair.

Dedication of the Japanese building. World's Fair.

Agricultural building. World's Fair.

Administration and Machinery buildings. World's Fair.

Fragment of group for Agricultural building. World's Columbian Exposition.

The Machinery building. Covers over 30 acres. World's Fair, Chicago, Ill.

Administration buildings, World's Fair, Chicago, Ill.

Administration and Electricity buildings, World's Fair, Chicago, Ill.

Inter-state Industrial Exposition, 1874. [Exterior view.]

View of the Inter-state Industrial Exposition, 1874. (Interior)

Ferris Wheel, side view.

View of a gorilla at unidentified Chicago exposition.