Misc: What monster is said to be living in a Scottish lake?

Questions

In 1817 First American school for the ---------- (Hartford, Connecticut)?

In 1865 President Abraham ---------- shot in Ford's Theatre by J.W. Booth.?

In 1889 Arnold ---------- , historian, born.?

In 1894 First ---------- shown in NY City?

In 1904 Sir John ---------- , actor, singer, born.?