Eddison Wadsworth Soohafyah learned silversmithing from his father Ted Watdsworth and while working at the Hopi Guild. Eddison is a member of the corn clan, beginning his jewelry-making career in 1984.
His hallmark is a Lakota Rain Mark which looks like a capital "H" with a slanting cross bar.
The above was taken from the Revised Edition of Hopi Silver The History and Hallmarks of Hopi Silversmithing by Margaret Nickelson Wright.