The Regular Issues of 1922–31 were a series of 27 U.S. postage stamps issued for general everyday use by the U.S. Post office. Unlike the definitives previously in use, which presented only a Washington or Franklin image, each of these definitive stamps depicted a different president or other subject, with Washington and Franklin each confined to a single denomination. The series not only restored the historical tradition of honoring multiple presidents on U. S. Postage but extended it. Offering the customary presidential portraits of the martyred Lincoln and Garfield, the war hero Grant, and the founding fathers Washington and Jefferson, the series also memorialized some of the more recently deceased presidents, beginning with Hayes, McKinley, Cleveland and Roosevelt. Later, the deaths of Harding, Wilson and Taft all prompted additions to the presidential roster of Regular Issue stamps, and Benjamin Harrison’s demise (1901) was belatedly deemed recent enough to be acknowledged as well, even though it had already been recognized in the Series of 1902. The Regular Issues also included other notable Americans, such as Martha Washington and Nathan Hale—and, moreover, was the first definitive series since 1869 to offer iconic American pictorial images: these included the Statue of Liberty, the Capitol Building and others. The first time (1869) that images other than portraits of statesmen had been featured on U.S. postage, the general public disapproved, complaining that the scenes were no substitute for images of presidents and Franklin. However, with the release of these 1922 regular issues, the various scenes—which included the Statue of Liberty, the Lincoln Memorial and even an engraving of an American Buffalo—prompted no objections. To be sure, this series (unlike the 1869 issues) presented pictorial images only on the higher-value stamps; the more commonly used denominations, of 12 cents and lower, still offered the traditional portraits.
This series of postage stamps was the fourth to be printed by the Bureau of Engraving and Printing, in Washington D.C.. Postal history "firsts" in these Regular issues included the first fractional-value postage stamps, the first stamp to pay tribute to the Statue of Liberty and the first postage stamps to honor Warren G. Harding, Rutherford B. Hayes, Grover Cleveland, Theodore Roosevelt, Woodrow Wilson and William Howard Taft.
Upon release these Regular Issues were initially printed on the flat-plate printing press, into which sheets were inserted one at a time, but shortly thereafter they were produced with the Stickney Rotary press which printed images with slightly less quality and clarity but which allowed for the dramatic increases in production rates, as printing paper was fed into the press from continuous rolls of paper. The Regular Issues were released over a nine-year period and can be found with three sizes, or gauges, of perforations which are used in the identification of the particular series for which a given stamp belongs.