"Because America was a nation of immigrants who lacked universally shared traditions, it had to invent some. So it came up with Thanksgiving, baseball and Norman Rockwell."
(Deborah Solomon, Smithsonian Magazine)
The Curtis Building in Philadelphia, which opened in 1910, was the headquarters of the Post, courtesy http://philadelphiaencyclopedia.org/archive/saturday-evening-post/#17037.
The American public couldn't get enough of Rockwell's work. "Because America was a nation of immigrants who lacked universally shared traditions, it had to invent some. So it came up with Thanksgiving, baseball and Norman Rockwell." The public loved his patriotism, his commitment to American values.
Rockwell did not receive the same warm welcome from the art world. While most artists were starving, Rockwell was bringing in a steady pay cheque. While most artists of the time were embracing Cubism, or Minimalism, Rockwell had his own "corny" style. "While most avant-gardists were heading down a one way street, Rockwell was driving in the opposite direction -- he was putting stuff into art." (http://www.smithsonianmag.com/arts-culture/inside-americas-great-romance-with-norman-rockwell-22055/?no-ist)
Rockwell's style worked. Called "the Dickens of the paintbrush", Rockwell is considered to be one of the premier artists of America.
Baby Carriage was one of the two paintings in Rockwell's portfolio when he first visited the Post in 1916 courtesy http://www.allposters.com/-sp/Baby-Carriage-Saturday-Evening-Post-Cover-May-20-1916-Posters_i7553148_.htm.