Sorry for the cell phone pic but this is a somewhat recent reveal and I was excited!
After being boarded up and abandoned for nearly two decades, the adjacent building was recently demolished as can be seen here: www.youtube.com/watch?v=-0NxpXiWfxE
And some info on the brand as found on cheznamastenancy.blogspot.com
"Cereal Mills were close relatives to flour mills and most familiar to our area was the Albers Bros. Milling Company. Albers began in Portland and moved north to Tacoma and Seattle. It was purchased by the Carnation Milk Company of Seattle when Carnation was unsuccessful in stopping Albers from using the trade name "Carnation Mush." Albers was able to keep its local mills going right into the 1960s and 1970s by concentrating on pet and animal foods. Today, owned by the Nestle Corporation, they are still in the animal food and cornmeal business but do not have a mill in Washington."
Oh yes, and "mush" is basically like polenta or cream of wheat.
And this was the ghost sign on the now demolished building: www.flickr.com/photos/kaseysmith/5986205530