1910. Wellington, New Zealand. "David Taylor's butcher shop, Wadestown, showing decorated carcasses and horse-drawn delivery cart. David Taylor in doorway." Glass plate negative by Frederick James Halse. View full size.

Washington, D.C., 1914. "Wrisley Brown, attorney, riding." You'll note the Washington Monument showing a decided tilt to the left, although the reason is more optical than political. Harris & Ewing glass negative. View full size.

December 1936. "William Helmke farm near Dickens, Iowa." Kittycat and Piglet sharing a Mulesicle. Photo by Russell Lee. View full size.

Circa 1900. "Betsy Ross House, Philadelphia." Our second look at Jack the horse. 8x10 inch glass negative, Detroit Publishing Company. View full size.

Atlantic City circa 1907. "Seaside Hotel (Seaside House)." Note the fly netting on the horse. 8x10 inch glass negative, Detroit Publishing Co. View full size.

        UPDATE: This is perhaps the earliest known example of a pig photobomb. See the comments for details.

Circa 1904. "The beach at Seabreeze -- Daytona, Florida." Open-air showcase for the latest styles in bonnets, bathing-costumes, self-propelled runabouts and light rigs. 8x10 inch glass negative, Detroit Publishing Co. View full size.

1915. "Indians, American. Red Fox James at White House." The young Blackfoot with the Boy Scouts pin, last seen here, was in Washington to petition the government for a national day honoring Native Americans. State, War & Navy Building at far left. Harris & Ewing Collection glass negative. View full size.

Red Fox James, a Blackfoot Indian, rode horseback from state to state seeking approval for a day to honor Indians. On Dec. 14, 1915, he presented the endorsements of 24 state governments at the White House. There is no record, however, of such a national day being proclaimed. (Library of Congress)

1915. "Indians, American. Red Fox James at White House." With the State, War and Navy building as backdrop. Harris & Ewing glass negative. View full size.

Washington, D.C., or vicinity ca. 1918. "Hunting scene" is the not terribly specific label for this sporting view. Harris & Ewing glass negative. View full size.

Hampton Roads, Virginia, circa 1900. "Going to the landing stage. Hotel Chamberlin in background." Although the harbor might not be mined, the street is. 8x10 inch glass negative, Detroit Photographic Company. View full size.

Circa 1916. "St. Catherine Street, Montreal, Quebec." Je me souviens. 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

"Produce wagon in city, 1923." One in a series of Harris & Ewing plates showing the alleys and backstreets of Washington, D.C. The subject here is a Chaconas grocery wagon. Who can identify the dome? 4x5 glass negative. View full size.

December 1936. "Scene from the Bronx tenement district from which many of the New Jersey homesteaders have come." Another example of the ostensibly onerous conditions from which the Resettlement Administration offered an escape. Medium-format nitrate negative by Arthur Rothstein. View full size.

Washington, D.C. "Horse Christmas tree, 1919." Where's Charlie Brown when you need him? National Photo Company Collection glass negative. View full size.

March 1865. "City Point, Virginia. 'Jeff Davis,' General Grant's pony." You can't say Ulysses S. Grant lacked a sense of humor. Wet plate negative. View full size.