The Last Goodbyes, c 1918

"When the Last Goodbyes Are Whispered," unused and undated, but clearly the First World War era. Illustrated Postal Card & Novelty Co., New York. 

Art work by Archie Gunn, 1863-1930. Here is biographical information from AskART:

Archie Gunn was a well-known and popular illustrator, whose pictures were in leading periodicals.  He was born in England and his father was a member of the British Royal Academy.  He first studied under his father in London.  For a time he designed costumes for Gilbert & Sullivan productions. He also achieved success as a portrait painter; one of his portraits of Disraeli hung on the walls of Queen Victoria's apartments.

After coming to America he worked as a magazine and newspaper illustrator.  He also did several calendar paintings for the Gerlach Barklow Calendar Company.