Mishler attended Ferris State College, Big Rapids, Michigan (Associate Degree, 1968), Art Center College of Design, Los Angeles (1970), and the Missouri Photo Workshop, Columbia (1976).
Since 1979 he has done freelance photography in Anchorage, Alaska, which he did also in 1973¬77. From 1977 to 1979 he was layout editor for National Geographic Magazine in Washington, D.C., and from 1973 to 1977 he was publisher of The Alaska Catalog. In 1971-73 Mishler was a member of the Skyriver documentary film project in Anchorage.
A member of SPE and the Alaskan Photographers Guild.