The concept of a "paper town"—a fictitious location deliberately inserted into a map to catch plagiarists—is one of the most fascinating intersections of geography, law, and art. However, to understand this topic accurately, it is necessary to first clarify a historical timeline: the deliberate use of fictitious towns as legal "copyright traps" is primarily a phenomenon of the 19th and 20th centuries, not the Renaissance.

While Renaissance cartographers did feature non-existent places on their maps, their motivations were entirely different.

Here is a detailed explanation of the "paper town" phenomenon, how it works as a copyright trap, and the difference between modern paper towns and Renaissance mapmaking.

The Anatomy of a Copyright Trap

To understand why mapmakers use paper towns (also known as phantom settlements, trap streets, or "mountweazels"), one must understand how copyright law applies to factual information.

In legal terms, facts cannot be copyrighted. You cannot copyright the fact that London is the capital of the UK, or that the Mississippi River flows south. What can be copyrighted is the specific artistic expression or compilation of those facts—the fonts, colors, line weights, and specific layout chosen by the mapmaker.

Because facts are free for anyone to use, it was historically very difficult for a map publisher to prove that a rival had stolen their work. If Company A sued Company B for copying their map of Ohio, Company B could simply argue, "We didn't copy you; we just surveyed the same terrain, so naturally our maps look identical."

To solve this, cartographers invented the copyright trap. By inserting a completely fabricated town, street, or river into their map, they created a unique identifier. If Company B's map suddenly featured that same fake town, Company A had undeniable proof of direct copying, because the rival could not have possibly discovered that town through independent geographic surveying.

The Most Famous "Paper Town": Agloe, New York

The quintessential example of a paper town occurred in the 1930s. Otto G. Lindberg and his assistant Ernest Alpers, founders of the General Drafting Company, were making a map of New York State. To protect their work, they created a fictitious town at a dirt road intersection in the Catskill Mountains. They named it Agloe (an anagram of their initials: O.G.L. and E.A.).

Years later, the cartographic giant Rand McNally published a map that included Agloe. General Drafting sued for copyright infringement, thinking they had caught their rival red-handed.

However, Rand McNally had a brilliant defense: their mapmakers had visited the location and found a real building called the "Agloe General Store." It turned out that a local man had seen the General Drafting map, assumed Agloe was the actual name of the area, and named his new store after it. Because a physical structure now existed bearing the name, Agloe had become a real place. The fiction had manifested into reality, and General Drafting lost their case. (This story later became the basis for John Green’s bestselling novel, Paper Towns).

What Did Renaissance Cartographers Actually Do?

If paper towns are a modern legal invention, why is this practice often mistakenly attributed to the Renaissance (approx. 14th to 17th centuries)?

During the Renaissance, mapmaking exploded due to the Age of Discovery and the invention of the printing press. Renaissance maps are famous for containing fictitious places, but not for copyright reasons. Their "paper towns" existed for several reasons:

1. Rumor and Myth: Cartographers like Gerardus Mercator and Abraham Ortelius relied on second-hand accounts from explorers, sailors, and indigenous legends. This resulted in maps featuring places like El Dorado (the city of gold), Terra Australis (a massive, imagined southern continent), or the Mountains of Kong in Africa.
2. Phantom Islands: Sailors would often misidentify icebergs, optical illusions, or navigational errors as land. This led to "phantom islands" like Frisland or Hy-Brasil remaining on standard maps for centuries.
3. Horror Vacui (Fear of Empty Space): Renaissance mapmakers disliked leaving blank spaces on their maps. If they didn't know what was in the interior of a continent, they would fill it with speculative mountain ranges, fictitious kingdoms, or sea monsters.
4. Different Legal Frameworks: Modern copyright law did not exist. Instead, Renaissance mapmakers relied on royal "privileges" (a monarch granting a monopoly to print a specific map). Copying (or "compiling") was actually the standard practice of the era. Mapmakers routinely copied each other's work to create master atlases, often crediting the original surveyor, but feeling no need to use "traps" to prevent copying.

The Legacy of Cartographic Traps

The tradition of the copyright trap survived the transition to the digital age, though it evolved.

When mapping out major cities, companies like the creators of the London A-Z street atlas or modern digital databases like Tele Atlas and Navteq (which power Google Maps and Apple Maps) frequently insert "trap streets." These are minor, fictional pedestrian walkways or slightly altered road curves that do not exist in reality.

Today, while satellite imagery and open-source mapping (like OpenStreetMap) have made it harder to hide fake towns without getting caught by the public, the "paper town" remains one of the most clever intellectual property enforcement tools ever devised.