Year.

Where Held.

Acres Bldgs.

Exhibitors.

Admissions.

Days Open.

1851

London....................

21

17,000

6,039,195

144

1855

Paris.........................

241/2

22,000

5,162,330

200

1862

London.....................

23 1/2

29,000

6,211,103

171

1867

Paris.........................

37

52,000

10,200,000

217

1873

Vienna...............

40

42,000

7,254,687

186

1876

Philadelphia.....

60

60,000

9,910,996

159

1878

Paris...................

60

52,000

13,000,000

494

1889

Paris...................

751/2

60,000

32.354,111

183