Mervin Leo Walvatne, 53, was last in contact with his sister in Spencer, Iowa, on July 18, 1990; his sister reported him missing on December 16, 1990 after losing regular telephone contact. At the time he disappeared he was living a transient lifestyle in Arizona and was known to be an alcoholic, with last known permanent addresses in the Yuma and Tucson areas. He had lived in Madison, Wisconsin, in the 1970s.

Walvatne is described as a white male, 5 feet 6 inches tall, about 150 pounds, with brown hair that may have been thinning or balding and green eyes. He had tattoos on his arms, possibly including his name Mervin, wore an upper denture and bore significant facial reconstruction from a late-1970s car accident that required wire and plastic to repair fractures to his nose, eye and cheek. The Spencer Police Department is the investigating agency.

Few circumstances of his disappearance are available. Does anyone who knew Mervin or saw him in Arizona in 1990 have information that could help investigators?