22nd The first baseball convention is held in New York’s Smith Hotel. It is called by the Knickerbockers and attended by 16 baseball clubs, all located on Manhattan and Long Island. One of the agreements reached is on the diameter the diameter of the baseball and it is to be between ten and ten and one-quarter inches in circumference and weigh between six and six and one-quarter ounces. In 1858, H.P. Harwood and Sons of Natick, MA becomes the first factory to produce baseballs. They also will be the first in the production of the two-piece figure-eight stitch cover baseball, the same in use today. The figure-eight stitching was devised by Col. William A Cutler.