https://www.pbs.org/wgbh/masterpiece/specialfeatures/franklin-roosevelt-and-crown-princess-martha-a-friendship-forged-in-war/#

It was in the midst of these machinations that Prince Olav and Princess Martha journeyed to Hyde Park for a weekend with the President and Mrs. Roosevelt. It soon became apparent FDR was quite taken with the couple, particularly Martha, whose light-hearted, elegant charm and regal bearing he found especially appealing. The weekend the royals spent in Hyde Park marked the beginning of a warm friendship between the president and the princess that would continue for the next six years.

https://www.pbs.org/wgbh/masterpiece/specialfeatures/atlantic-crossing-what-you-need-to-know-before-you-watch/

MASTERPIECE’s Atlantic Crossing covers some surprising and little-known history involving U.S. President Franklin Delano Roosevelt and Norway’s Crown Princess Martha. Before the premiere on Sunday, April 4, 9/8c, catch up on five historic situations that will help you best appreciate the show–from Norway’s intent to stay out of World War II, to Roosevelt’s decision to run for a third term.