being lowered at the Governor's Mansion for the last time (31 March 1917)
Transfer Day is a holiday celebrated in the U.S. Virgin Islands on March 31. It marks the transfer of the islands from Denmark to the United States that took place in 1917.
The holiday is the subject of Sophie Schiller's 2012 novel Transfer Day ISBN 978-0615653433
1917 money transfer after the Treaty of the Danish West Indies
$25,000,000 receipt for the Treaty of the Danish West Indies