Not to worry, this RED real photo postcard from the early 20th century isn't glowing from radiation despite being produced by the Radium Studio in Muskegon. Some RPPC images were printed on red paper (or on paper tinted red) to indicate warmth. This is a perfect example, as the gent is reading by the warmth of a fire. A discussion figuring out the process is HERE on the Post Card Collector site.
Radium Photography, an unusual name for a company, is still in business! They were founded in 1909 and for over 100 years have been providing service to the Western Michigan area! See their website HERE. Imagine the number of images a century old company has produced.
Undated RPPC in red Collection Jim Linderman
Books and ebooks by Jim Linderman are shown HERE
Labels: Real Photo Postcard