A few of the documents (see below) we used to source the podcast... The first one is the ship manifest for the S. S. Majestic sailing from Southampton on January 6, 1926. Mae Murray is a passenger one day after the birthdate given to Koran.
Here (below) Mae is a passenger aboard the S. S. Tuscania leaving France for New York on September 24, 1926.
Below the entry form for Koran in August of 1927.