Mrs. George Flett lived in Oswego, a city and the county seat of Oswego County in upstate New York.
This is Bertha Duell Flett whose brief biography is found in the Research Note (below).
Originally a British trading post near the mouth of the Oswego River at Lake Ontario, Oswego became an important center of manufacturing with the development of canals along the Oswego River in the 19th century.
https://en.wikipedia.org/wiki/Oswego,_New_York
In July of 1907, Mrs. Flett received a postcard from an unidentified correspondent.
The postcard was mailed from Syracuse, the city and county set of Onondaga County in Central New York State.
The first European visitors to this region were French missionaries who noted the abundance of brackish water in the region.
The manufacturing of salt became a major industry in the history of Syracuse.
At the center of branches of the Erie Canal, and (later) the New York Central Railroad, Syracuse became the commercial and cultural hub of the region.
https://en.wikipedia.org/wiki/Syracuse,_New_York
Oswego is about 40 miles northwest of Syracuse.
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The face of the postcard is a hand-colored photograph of the New York Central railroad station in Syracuse.
The New York Central Railroad system was the consolidation of more than a dozen regional railroads in the Middle Atlantic and the Great Lakes regions of the US.
The path to consolidation was characterized by ruthless competition, first with canal systems, then between railroad systems.
https://en.wikipedia.org/wiki/New_York_Central_Railroad
In a period of 100 years, Syracuse had four New York Central stations – the building featured here was replaced by a larger station in the Art Deco style in 1936.
https://en.wikipedia.org/wiki/Syracuse_station_(New_York_Central_Railroad)
Although the New York Central Railroad was defunct by 1970, the new federalized rail system (Amtrak) maintained passenger service to Syracuse.
https://www.railpassengers.org/site/assets/files/2541/syr.pdf
The postcard photograph was published by the “C. C. E. & E. Company” of Syracuse.
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Because the postcard has an “undivided back”, there is no message inscribed there.
The sender did not choose to write a few words on the margin of the face.
Nevertheless, Mrs. Flett preserved the postcard in very good condition throughout her life.
RESEARCH NOTE
I found incomplete data for Mrs. George Flett.
In August of 1873, George H. Flett was born in Oswego, New York
He was the son of Alexander Flett (1841-1929) and Edna J. Dexter Flett (1849-1922).
George had a sister, Edith, who died in 1885, and a brother Burton who appears in a NY Census of 1875 and the US Census of 1880 – and then disappears.
In 1892, when he was 19 years old, George married Bertha B. Duell (1873-1949) – also 19 years old.
Bertha was the daughter of Eben Holland Duell (1842-1910) and Mary Elizabeth Marshall (1845-1925).
Bertha had at least three sisters (possibly a fourth) but one sister died in her first year.
It does not appear that Bertha and George had children.
George and Bertha appear in Oswego, NY in every state and federal census during their lifetimes.
George died in October of 1948, aged 75 years.
Bertha died 7 months later, in May of 1949.
They are buried together in the New Haven Cemetery in Oswego County, NY.
https://www.findagrave.com/memorial/163513559/bertha_b-flett
https://www.findagrave.com/memorial/120382307/george-h-flett
