Therkel Mathiassen

Therkel Mathiassen: The Thimble Man Who Named a Culture

The Inuit communities he worked among in the early 1920s gave Therkel Mathiassen a nickname: Tikkilik, "the one with the thimbles," earned for the small metal sewing tools he handed out in exchange for cooperation and hospitality during his fieldwork. It is a small, human detail from a career that otherwise reads as a founding document of an entire scientific field — Mathiassen was the archaeologist whose Hudson Bay excavations first identified and named the Thule culture, the prehistoric Inuit civilization that once stretched across the Arctic from Alaska to Greenland.

From Favrbo to the Frozen Bay

Mathiassen was born on September 5, 1892, in Favrbo, Denmark. He earned a doctorate from the University of Copenhagen, submitting a dissertation titled Archaeology of the Central Eskimos (1927) that would go on to lay the groundwork for the entire subsequent field of Eskimo — now more commonly termed Inuit — archaeology. But the fieldwork behind that dissertation came earlier, and it came through one of the great Arctic scientific expeditions of the twentieth century.

The Fifth Thule Expedition

Between 1921 and 1923, Mathiassen joined the Fifth Thule Expedition, the ambitious survey of Arctic North America led by the Danish-Greenlandic explorer Knud Rasmussen, traveling alongside the explorer and writer Peter Freuchen. While Rasmussen's own contribution centered on ethnography and the recording of Inuit oral tradition across the Arctic, Mathiassen's assignment was archaeological: excavating sites west and north of Hudson Bay to establish, for the first time on a systematic scientific basis, the material culture of the region's prehistoric inhabitants. In 1922 he conducted what is described as Canada's first true Arctic archaeological excavation, at the site of Naujan (Naujaat), uncovering twelve sod houses along with kitchen-midden refuse deposits that gave him a detailed material record of how the site's occupants had actually lived — their tools, their diet, their dwellings — rather than relying on oral tradition or guesswork alone.

Naming the Thule Culture

It was this Hudson Bay fieldwork that led Mathiassen to identify and name the Thule culture: a distinct, technologically sophisticated prehistoric Inuit society, marked by characteristic tool types, dwelling structures and whale-hunting technology, that he recognized as a coherent archaeological tradition distinct from both earlier Arctic peoples and the historic Inuit communities of his own time. His publications through the 1920s and 1930s introduced the Thule culture concept to the wider scholarly world, giving archaeologists across the circumpolar north a shared framework and vocabulary for classifying prehistoric Arctic sites that persists, refined but fundamentally intact, in the discipline today. His work also led him to dismiss earlier theories proposing a distinct Greenlandic Stone Age culture predating the Thule people — a judgment later complicated when radiocarbon dating in the 1950s provided evidence vindicating aspects of those earlier theories, a reminder that even foundational fieldwork can be overtaken by techniques not yet invented in its own time.

A Career Built on Return Trips North

Mathiassen did not stop at Hudson Bay. He went on to lead six separate expeditions to Greenland between 1929 and 1955, sustaining more than three decades of direct Arctic fieldwork. In 1929 he excavated Norse-era culture sites at Inugsuk, Greenland, working alongside research assistant Frederica de Laguna, who would herself become one of the most significant American Arctic archaeologists of the twentieth century — a collaboration that helped transmit Mathiassen's methods into the next generation of the field on both sides of the Atlantic. Throughout, historians of the discipline credit Mathiassen's Hudson Bay and Greenland work with marking, in a fairly literal sense, the beginning of the professional period in Arctic archaeology — the shift from amateur or purely ethnographic Arctic exploration toward systematic, stratigraphy-based excavation practiced by trained specialists.

Museum Leadership

Mathiassen's institutional career culminated at the Danish National Museum, where he served as curator of the prehistoric department from 1941 to 1946 before being promoted to chief curator of the same department, a post he held from 1946 until 1962. That long museum tenure gave him decades of institutional authority to shape how Denmark collected, preserved and interpreted its own archaeological record, alongside his Arctic specialization. In 1932 the Royal Danish Geographical Society awarded him the Hans Egede Medal, one of Denmark's principal honors for polar and geographical achievement, and he sat on the founding Danish committee of Societas Arctica Scandinavica, an early Scandinavian body for Arctic scholarly cooperation.

Why Therkel Is Called a Genius

Mathiassen's claim to the word rests on a specific and consequential act of classification: standing amid unglossed sod-house ruins and midden heaps on the shores of Hudson Bay, he recognized a coherent, previously unnamed prehistoric culture and gave archaeology the conceptual category — Thule culture — that the entire field still organizes itself around a century later. That kind of pattern recognition, turning scattered physical evidence into a durable scientific taxonomy, is a genuinely rare skill, and it required him to combine field excavation discipline with a synthesizing, comparative mind capable of seeing continuity across sites hundreds of miles apart. The honest counter-case is that his methods, however pioneering for 1922, were primitive by later standards, and at least one of his major interpretive judgments — his rejection of a separate Greenlandic Stone Age culture — was later shown to be incomplete by radiocarbon techniques he had no access to. He was less a lone visionary than the right trained specialist attached to an unusually well-resourced expedition at exactly the moment Arctic archaeology needed someone to do the foundational work; his genius was disciplined observation and classification under difficult field conditions, not theoretical originality of the kind that reshapes a discipline's basic assumptions.

Legacy

The term "Thule culture" that Mathiassen coined remains the standard designation used by archaeologists across the North American and Greenlandic Arctic today, a naming legacy on the scale of a genus name in biology. His decades at the helm of the Danish National Museum's prehistoric department and his six Greenland expeditions extended that foundational Hudson Bay work into a career-long stewardship of Arctic archaeology, cementing Denmark's central institutional role in a field his own excavations had effectively founded.

Achievements

• Knight of the 1st Class of the Order of the Dannebrog
• Knight of the Order of the Dannebrog
• Recorded as explorer, anthropologist and cartographer