manhattan

Similar image exists at NARA (catalog.archives.gov/id/26431708)

Belgian Mission in New York. Arrival of visiting delegates at the Battery, New York. Left to right: Baron Moncheur, head of the Belgian Mission; W.D. Robbins, reception committee Frederick R. Coudert, reception committee.

Dean Z, thanks for the identifications in this photo and the other similar ones, we'll add them to the catalog record.

Ludovic Moncheur (1857-1940)
www.wikidata.org/wiki/Q1874008
Warren Delano Robbins (1885-1935)
www.wikidata.org/wiki/Q7970162
Frederic René Coudert II (1871-1955)
www.wikidata.org/wiki/Q63198411

Similar image on August 21, 1917 at the stairs of New York City Hall. (catalog.archives.gov/id/26431636) Belgian Mission in New York City. Baron Moncheur, head of the Belgian Mission, center, the other members of the Mission and the Mayor's Reception Committee, Mayor John Purroy Mitchel is on the Baron Moncheur's left, at the City Hall, New York City

Hotel New Netherland (later Hotel Netherland) was located at the northeast corner of Fifth Avenue and 59th Street, in Manhattan, New York City, New York, in what is now the Upper East Side Historic District. It contained the Sherry's restaurant from 1919 until its demolition in 1927.

www.wikidata.org/wiki/Q19361341

The ca. 1912 photo in en.wikipedia.org/wiki/Hotel_New_Netherland shows a different building (or at least different facade) to the left of the hotel. The building was probably 785 Fifth Avenue. The New Britain Herald. December 06, 1924, Page 5, column 2 chroniclingamerica.loc.gov/lccn/sn82014519/1924-12-06/ed-... reports that the hotel was sold by the estate of Baron William Waldorf Astor to Frederick Brown, who paid cash for the building which was assessed by the city at $2,100,000. That accounts for the fact that Bain had the photo filed with other pictures from that month. The Evening Star. May 10, 1925, Page 18, column 6, near top chroniclingamerica.loc.gov/lccn/sn83045462/1925-05-10/ed-... reported that the hotel "closed its doors today. The building will be converted into stores and apartments." The Wikipedia article linked above indicates that the building was demolished in 1927 and replaced by a new hotel, the Sherry-Netherland, which was an apartment hotel. From en.wikipedia.org/wiki/The_Sherry-Netherland "Demolition began in the early winter of 1926, and construction began before the year was out, but the upper floors suffered a spectacular fire when wooden scaffolding caught alight on April 12, 1927 before the building was completed. The fire burned for 12 hours and flames were said to have been visible from Long Island. It ignited a debate in the press concerning the ability of the available technology to put out fires in high-rise buildings."