
MEXICAN-AMERICAN BORDER
Here are some of the sketches that show existing border markers they found on their survey. There are a lot.

Here's one with a fasces looking flag holder.


Here's one with a fasces looking flag holder.

Fifty-two boundary monuments were erected between 1849 and 1857 along the U.S - Mexico border. Of these monuments, most were simple stone mounds built without mortar, while seven were constructed with more substantial materials of marble or cast iron. Over time, the occasional destruction of these smaller stone monuments and the increasing population along the border led to the creation of the International Boundary Commission to resurvey and demarcate the western boundary in 1889. Starting in 1891 to 1894, IBC crews reconstructed old monuments and erected new ones, increasing the number of monuments from 52 to 258. source
The numbers don't match. This source says there are 276. I guess these guys have the right number since they provide photos of all 276.
Here are some of the markers:


They are made from a variety of materials and vary in shape and size.







They are made from a variety of materials and vary in shape and size.





This one marks the initial point of boundary, one of the original 52.. They went through a lot of trouble for this one.
The Initial Point of Boundary Between U.S. and Mexico, Monument No. 258, was first established as a cairn of rocks in 1849 following the signing of the Treaty of Guadalupe Hidalgo. A white marble shaft was manufactured in New York, transported around Cape Horn on the USS Supply to San Diego, and erected and dedicated at the site in Imperial Beach in June, 1851. The marble monument was an obelisk about 20 feet (6 metres) in height, resting on a marble pedestal. On its top was an inverted acorn to symbolize the strength and stature of the California live oak tree.
There are 77 photos of these monuments being repaired or painted in this catalog. I couldn't find any of these online except this one. Are there other things in these images they don't want us to see. This makes me think they are way older than they claim to be and where did the original pyramids of rock come from and where are they now?
Journey to monument #140
PDF Monuments and Border information
CANADIAN-AMERICAN BORDER


The history of the Canadian border is way more convoluted than that of the southern border. Again, they are of different sizes and materials but always an obelisk.




Boundary Marker No.1 on the 49th parallel north on the western shore of Point Roberts, Washington, erected in 1861.

Check the date on this one that was removed because it was damaged. Is that line where the paint is worn of from yearly snow pack or mudflood?

Another point of interest from the International Peace gardens on the US-Canada border.

These reminded me of the uncapped Georgia guide stones.

And this was the original peace monument. The shape looks like the original markers found by the Mexican border survey.

Border slash article
ND Studies and borders
International Peace Gardens
DISTRICT OF COLUMBIA BORDER



This one has been repaired,

Ellicott, a prominent professional surveyor, hired Benjamin Banneker, an astronomer and surveyor from Maryland, to make the astronomical observations and calculations necessary to establish the south corner of the square at Jones Point in Alexandria.According to legend, "Banneker fixed the position of the first stone by lying on his back to find the exact starting point for the survey ... and plotting six stars as they crossed his spot at a particular time of night." From there, Ellicott's team embarked on a forty-mile journey, surveying ten-mile lines first along the southwest line, then along The northwest line, next along the northeast line, and finally along the southeast line. The team completed this rough survey in April 1791.

On April 15, 1791, the Alexandria Masonic Lodge placed a small stone at the south corner at Jones Point in ceremonies attended by Ellicott, federal district commissioners Daniel Carroll and David Stuart, and other dignitaries. George Washington did not attend the ceremony, although he did visit the site the prior month. Newpapers around the country announced the story of the beginning of the new federal city. (In 1794, the ceremonial stone at Jones Point was replaced by a large stone, still in place today, with the inscription "The beginning of the Territory of Columbia" on one side.) source
Want to see this original one that the Masons erected, sorry you can't because "The stone was accidentally bulldozed and removed during the construction of the storefront in September 1952. A replica stone was created in 2015 but has not yet been placed." They do have a plaque though.
It is marked by this underwhelming plaque. Makes you wonder what is underneath.

The timeline of the Ellipse makes no sense:
The Army Corps of Engineers began work on the Ellipse in 1867. The park was landscaped in 1879, and American Elms were planted around the existing portion of roadway. In 1880, grading was begun and the Ellipse was created from what had been a common dump. In 1894, the Ellipse roadway was lit with electric lamps.
The work was supervised by Lieutenant Colonel Thomas Lincoln Casey. One of the jobs he had to do was to grade and lay out Ellipse Park. Supposedly he didn't mess with the center of the ellipse as it was under other supervision for..... sewer work.
Photos of the boundary stones
And now you know about the boundary stones of the US... Or the boundary stones of the previous reset?
Plissken
Note: This OP was recovered from the Wayback Archive.
Note: Archived Sh.org replies to this OP: Border Monuments of the United States



