Albert Wilmarth is a folklorist and professor of English at Miskatonic University in Massachusetts. When, after the historic floods in Vermont in 1927 in public, the isolated sighting of strange bodies in the rivers is discussed, Wilmarth first takes part in a rationalized form, which quickly makes him one of the most well-known spokesmen in the debate.
Only after the arrival of the letters of the local hermit Henry Wentworth Akeley and closer inspection of the sightings and myths of the area he changes his point of view increasingly. By continuing to contact Akeley, Wilmarth quickly becomes convinced that the myths are true and that the mountains are inhabited by aliens.
After a local commemoration of the scene and the subsequent disappearance of his friend Akeley, Professor Wilmarth, who continues to teach at Miskatonic University, despite the lack of evidence, points to the authenticity of ancient Indian legends about the Mi-go.
In the Expanded Mythos, Wilmarth is the founder of the Wilmarth Foundation.