The Post was founded in November 1831 by two prominent Boston businessmen, Charles G. Greene and William Beals.

Grozier suffered a total physical breakdown in 1920, and turned over day-to-day control of the Post to his son, Richard.

[3] From 1904 through 1916, "Sunday Magazine" was a regular syndicated supplement to Sunday editions of newspapers in various cities across the United States, including The Boston Post, The Philadelphia Press, New-York Tribune, Chicago Tribune, St. Louis Republic, Detroit Free Press, and Minneapolis Journal.

The regular 20-page periodical has a magazine-like format that is essentially identical to the versions that accompanied other major newspapers in the early 1900s, featuring the same cover illustration, articles, short stories, serials, and advertisements.

The paper had 700 ornate, ebony-shafted, gold-capped canes made and contacted the selectmen in Maine, Massachusetts, New Hampshire, and Rhode Island towns.