Works copyrighted before 1964 had to have the copyright renewed sometime in the 28th year. If the copyright was not renewed the work is in the public domain. No renewal notice found for any images of William Coffin Coleman for items published in the year 1920 through 1964. For instance I can find a renewal notices for the New York Times for these years. If you find a renewal notice under a variation of the name of the person, notify me and I will delete this.