New York Herald war correspondent Thomas Wallace Knox was tried by a federal court martial at Young's Point, Louisiana for espionage and disobeying military orders. After a fourteen day trial, he was found guilty and barred from the war zone. Abraham Lincoln later reversed the findings. (By John Osborne)

Linus Yale, Jr. of Newport, New York patented his "clock" lock. It was the first of many patents he registered. (By John Osborne)

With 250 delegates from twenty-two states in attendance, the American Medical Association was organized in the Hall of the Academy of Natural Sciences in Philadelphia, Pennsylvania.  Dr. Jonathan Knight was elected as its first president. (By John Osborne)

An iron truss bridge, constructed of prefabricated sections, was completed overnight between Saturday and Sunday on the main line of the Philadelphia and Reading Railroad Company near West Manayunk, Pennsylvania. A little over ten yards long, it was the first of its kind in the country. (By John Osborne)

The Women's Hospital of New York City, the first such institution to be opened by women and to serve women exclusively, opens its doors at a forty bed facility on Madison Avenue in New York City. (By John Osborne)

John Merryman is arrested at his home in Cockeysville, Maryland by federal military forces, charged with treason, and imprisoned at Fort McHenry. (By John Osborne)

The nation's first Scandinavian Methodist Episcopal Church was incorporated in Cambridge, Wisconsin. The new church had a fifty-two person congregation under the leadership of the Reverend Christian B. Willerup. (By John Osborne)

The Pennsylvania and Lehigh Zinc Company was incorporated in Bethlehem, Pennsylvania.  The company built a mill that in October began the first commercial milling of zinc in the United States. (By John Osborne)

The commercial production of zinc began at the Pennsylvania and Lehigh Zinc Company Mill, the first in the country.  The company had been incorporated the previous May. (By John Osborne)

A school for the physically disabled was incorporated under the auspices of the New York Society for the Ruptured and Crippled.  The private school opened at the Hospital for the Ruptured and Crippled in New York City on May 1, 1863 on Lower Second Avenue. (By John Osborne)