According to ethnohistorian James Axtell, there is abundant evidence that the Native American practice of scalping existed long before Europeans arrived. Axtell argues that there is no evidence that the early European explorers and settlers who came to the Americas were familiar with the ancient European practice of scalping, or that they ever taught scalping to Native Americans. Axtell writes that the idea that Europeans taught scalping to Native Americans became popular recently, during the 1960s. This idea quickly became conventional wisdom because it fit the tenor of the times of the counter-cultural 1960s, writes Axtell, but he argues that archaeological, historical, pictorial, and linguistic evidence contradicts this notion. Certain tribes of Native Americans practiced scalping, in some instances up until the 19th century.