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Continent
Most continents are heraldic families — the Byzantine successor states share an eagle across eastern Europe; the Pan-Slavic tricolour crosses six borders in the west; the sun-and-Phrygian-cap vocabulary of South America is the trace of a single revolutionary generation. North America is not a family. Its three national vocabularies — American republican, Canadian monarchical-bilingual, Mexican pre-Columbian — were built in conscious contrast to each other, and the borders that separate them are also heraldic frontiers as sharp as any in the world. This page tells the story of how three traditions grew up next to each other without ever quite becoming one.
The oldest of the three vocabularies is the American, and it begins with a choice about what to omit. When the Continental Congress commissioned a national seal on 4 July 1776, the day of the Declaration of Independence, it appointed Franklin, Adams and Jefferson to a first committee. Their proposal — Moses parting the Red Sea — was set aside. So was the second committee’s work. Only the third, in June 1782, produced the design Congress adopted: the composition of Charles Thomson, Secretary to the Congress, working with the young Philadelphia heraldist William Barton.
The result is one of the most legally strict national arms in the world. There is no crown, no dynastic charge, no supporters. There is a bald eagle — native to the continent, and consciously chosen against the European golden eagle it displaces — bearing on its breast a shield of thirteen paleways argent and gules with a chief azure. In its beak a scroll reads E Pluribus Unum, a phrase Thomson found in a Latin poem then attributed to Virgil. On the reverse of the seal are the pyramid, the eye of Providence, and a second Virgilian motto, Novus Ordo Seclorum. Two Latin phrases; no dynastic reference; no religious authority named; no royal precedent invoked. The Great Seal is a document of what the young republic decided not to inherit.
The pattern spread. Every one of the 50 states of the Union maintains its own seal, most drawn on the same austere republican model: a state motto in Latin, a landscape or industrial scene, no dynastic charge. The oldest continuously-used is Massachusetts (1780, drawn by Nathan Cushing before independence); the newest is Alaska (1959). Twenty-five of the fifty state flags are the state seal charged on a plain monochrome field — a pattern the North American Vexillological Association labels with the acronym SOB, “Seal on a Bedsheet,” and consistently ranks among the least effective flags of any polity. The best-known exceptions — Texas (1839), California (1846), New Mexico (1925), Maryland, South Carolina — are graphic successes precisely because they abandoned the SOB formula for a single distinctive charge.
North of the Great Lakes, the opposite choice was made. The British North America Act of 1867 created a self-governing federation without breaking the link to the Crown. Ninety years later, the royal arms of Canada were assumed by proclamation of King George V on 21 November 1921 as a quartered composition combining the arms of the four originating peoples of the federation — the three lions of England, the lion of Scotland, the harp of Ireland, the fleurs-de-lys of France — with a base of three maple leaves added in 1957. The motto is A Mari Usque Ad Mare, drawn from Psalm 72: “From sea to sea.” Where American arms omit dynasty and religion, Canadian arms enumerate both.
The institutional consequence became explicit on 4 June 1988. By letters patent to Governor General Jeanne Sauvé, Queen Elizabeth II established the Canadian Heraldic Authority as an office of the Crown, delegating the royal prerogative of granting arms in Canada. It is the first such authority in any Commonwealth realm outside the United Kingdom, and it marked Canadian heraldic independence from the Kings of Arms at the College of Arms in London and the Court of the Lord Lyon in Edinburgh. The Chief Herald of Canada operates from Rideau Hall; since 1988 the Authority has granted over 4,500 arms, and its innovations in incorporating Inuit, Cree, Ojibwe and other Indigenous vocabulary into formal heraldic grants have been closely watched elsewhere in the Commonwealth.
The pattern extends to the provinces. The arms of Nova Scotia, granted by charter of Charles I in 1625, are the oldest continuously-used arms in the Commonwealth. Quebec’s Fleurdelisé (1948) revives the banner of Carillon; Ontario quarters the cross of Saint George with maple leaves; Nunavut’s 1999 grant — iglu, inuksuk, qulliq oil lamp — is the Authority’s most-cited example of full Indigenous heraldry at the crown-grant level.
To the south, the third tradition was built by grafting an even older story onto the modern republic. The coat of arms of Mexico is unique in world heraldry for placing a pre-Columbian founding myth at its centre, and doing so as a matter of official design rather than romantic revival. According to the Codex Mendoza (c. 1541) and other post-Conquest sources, the wandering Mexica people were instructed by the god Huitzilopochtli to settle where they saw an eagle perched on a prickly pear cactus devouring a rattlesnake. They saw such an eagle on an islet in Lake Texcoco in 1325, and there founded Tenochtitlan — the site of modern-day Mexico City.
Every one of the arms of independent Mexico since 1823 has reproduced this scene. The current form was fixed by presidential decree of Gustavo Díaz Ordaz on 16 September 1968, timed to coincide with the Mexico City Olympic Games. The design is by Francisco Eguía Rosado, following iconographic guidance from the Instituto Nacional de Antropología e Historia. The composition is unusual for its stark realism: no armoured lions, no impaled shields, no crown, no motto scroll. Only the eagle, the cactus, the serpent, and a wreath of laurel and oak tied by a red-white-green ribbon.
The 32 state arms extend the same layering. Mexico City retains the arms granted by Charles V of Spain in 1523 — making them, together with those of Veracruz, the oldest continuously-used arms in North America. Below the Spanish granted arms sit modern layers referencing Aztec heritage. Yucatán encodes Mayan iconography; Oaxaca the Zapotec pyramid of Monte Albán. In Mexican regional heraldry, pre-Columbian imagery and Spanish colonial grant are not opposites but layers in a single composition.
The three vocabularies almost never cross. There is no American coat of arms with a maple leaf; no Canadian province using an Aztec eagle; no Mexican state carrying the thirteen stripes. The three sovereign states of North America drew independently on their own historical vocabularies and made deliberate choices about what not to borrow from their neighbours.
Two small exceptions test the rule. The state flag of New Mexico (1925), designed by Harry Mera, carries the red Zia sun on a field of amarillo — a design closer to Mexican pre-Columbian vocabulary than to the American SOB pattern. The arms of Quebec retain the three fleurs-de-lys of France above a Plantagenet lion and three maple leaves, integrating the French royal tradition that American arms exclude by design. These are the shortest crossings on a continent of otherwise sharp heraldic borders.
The one shared question all three traditions face is how to incorporate Indigenous emblems, and here the answers diverge as sharply as elsewhere. Mexico built the pre-Columbian eagle into the national arms themselves. Canada, since 1988, integrates Indigenous vocabulary at the level of registered arms granted by the Canadian Heraldic Authority. The United States has no equivalent framework: Indigenous emblems appear on some state seals (Oklahoma, New Mexico) but not on federal arms, and each of the 574 federally-recognised tribes handles its own symbols independently. Three answers, three different institutional arrangements — each consistent with the tradition around it.
Each was founded around a different origin story that its heraldry deliberately encodes. The United States broke from the British Crown and built a strictly republican vocabulary (bald eagle, thirteen stripes, Latin mottoes) around the Great Seal of 1782. Canada preserved the monarchical link through 1867 Confederation and formalised its own crown heraldic authority in 1988, keeping the arms of the four founding kingdoms. Mexico anchored its identity in the pre-Columbian founding myth of Tenochtitlan (1325). The three vocabularies were built in conscious contrast to each other.
The arms of the City of Mexico, granted by Charles V of Spain in 1523, are the oldest continuously-used arms in North America. The arms of Nova Scotia, granted by charter of Charles I in 1625, are the oldest arms in continuous use in the Commonwealth.
Three institutional answers to a shared question. Mexico built the pre-Columbian eagle into the national arms. Canada, through the Canadian Heraldic Authority since 1988, integrates Indigenous vocabulary at the level of registered arms grants. The United States has no equivalent framework: Indigenous emblems appear on some state seals (Oklahoma, New Mexico) but not on federal arms, and each of the 574 federally-recognised tribes handles its own symbols independently.
In a private letter of 26 January 1784 to his daughter Sarah Bache, Franklin complained that the eagle chosen for the Great Seal (in June 1782) was a bird of “bad moral character” that stole fish from other birds, and suggested the wild turkey would have been a more respectable choice. The letter was never a formal congressional proposal — Franklin had left the last heraldic committee before the design was finalised — but the anecdote has entered popular memory as if it had been.
Twenty-five of the fifty state flags follow the same formula: the state seal charged on a plain monochrome field, most often blue. The North American Vexillological Association coined the term SOB (Seal on a Bedsheet) for this pattern. Only a small minority (Texas 1839, California 1846, New Mexico 1925, Arizona 1917, Maryland, South Carolina) chose distinct heraldic vocabularies from the start.
Last reviewed by the Emblema Mundi editorial team on 5 July 2026.