Conversation so far:
Where were special screenings of The Birth of a Nation held?
Birth of a Nation was the first movie shown in the White House, in the East Room
When did The Birth of a Nation special screening in the White House happen?
Birth of a Nation was the first movie shown in the White House, in the East Room, on February 18, 1915.
Who arranged the special screening of The Birth of a Nation in the White House?
Are there any other interesting aspects about The Birth of a Nation besides the special screening at the White House?
In Griffith's words, the showings to the president and the entire Supreme Court conferred an honor upon Birth of a Nation. Dixon and Griffiths used this commercially.

Question: Were there any other special screenings?
Self-contained rewrite: Were there any other special screenings of The Birth of a Nation besides the White House?