ambassadors

This is Henry Van Dyke, clergyman, author and professor. He was also US Minister to the Netherlands during WWI so this probably on one of his trips to or from the Netherlands. en.wikipedia.org/wiki/Henry_van_Dyke

Perhaps best remembered as a poet. His wife also looks very Dutch.

Presbyterian Clergyman, native of Germantown, Pennsylvania. Author of the beloved hymn "Joyful, Joyful, We Adore Thee". Read more here: en.wikipedia.org/wiki/Henry_Van_Dyke

Oscar Solomon Straus - Jewish statesman and diplomat to the Middle East, influential in the late 1880s to 1890s as US Minister in Turkey. Later U.S. Sec. of Commerce & Labor in 1900s under President Theodore "Teddy" Roosevelt - Served one year again in Turkey, as Ambassador, under President Taft. Wrote his autobiography in 1922, "Under Four Administrations: From Cleveland to Taft." His older brother, Isidor Straus and his wife were among the victims in the sinking of the Titanic in 1912.

The photo was taken at a reception for New York Bull Moose candidate for Governor Oscar Straus and Mrs. Straus, held at the Port Washington, Long Island, home of Bull Moose congressional candidate -- and former Congressman -- Bourke Cockran, on September 28, 1912 -- a kick-off event for the fall campaign of the Nassau County Bull Moose (Progressive) Party. Story in The New York Times, September 29, 1912: query.nytimes.com/mem/archive-free/pdf?res=9F04EFD9113AE6... Other Bain/LOC photos of the Lawn Fete for Oscar Straus:

LOC -- Mr. Cockran's name is misspelled in your title, and in Bain's as well.

James Eric Drummond, 7th Earl of Perth[a] GCMG, CB, PC (17 August 1876 – 15 December 1951) was a British politician and diplomat as well as the first Secretary-General of the League of Nations (LN) (1920–1933). After his time with the League of Nations he became British ambassador to Rome (1933–1939) and later, chief adviser on foreign publicity in the Ministry of Information (1939–1940). In 1946 he became deputy leader of the Liberal Party in the House of Lords. Drummond died of cancer on 15 December 1951 at his home in Sussex. en.wikipedia.org/wiki/Eric_Drummond,_7th_Earl_of_Perth

Thank you for the added information.