April 19: On this date in 1966, Green-Wood’s entry arches were designated a New York City landmark.

April 18: Green-Wood Cemetery was chartered by the State of New York on this date in 1838.

April 17: Green-Wood’s first historian, Nehemiah Cleaveland, died on this date in 1877.

April 16: On this date in 1957, Johnny Torrio, organized crime boss who taught Al Capone the business, died.

April 15: In 1912, on this date, the RMS Titanic, a magnificent passenger liner that was thought to be unsinkable, sank; just over 1500 people, including passengers William Augustus Spencer and Wycoff Vanderhoef, lost their lives.

April 14: On this date in 1865, actress Laura Keene was on stage at Ford’s Theatre in Washington, D.C., when President Abraham Lincoln was assassinated.

April 13: The McGovern-Weir Greenhouse (purchased by Green-Wood in 2012) was designated a NYC landmark on this date in 1982.

April 12: On this date in 1913, John Brooks Henderson, who insisted on co-sponsoring the 13th Amendment outlawing slavery as a U.S. Senator from Missouri, and was never elected to office again, died.

April 11: Mary White Ovington, suffragist, journalist, and a founder of the NAACP, was born on this date in 1865.

April 10: In 1866, on this date, the ASPCA, the first humane organization in the Americas, was founded by Henry Bergh.