This is a Coca-Cola Calendar from 1916.
I took the calendar to the Graphic Conservation Company in Chicago.They would clean, repair, and preserve it. There typical work would be:1.Remove staples, remove calendar.2. If found, remove adhesive where calendar was joined at staples.3. Dry clean overall.4. Repair tears - japanese tissue with starch paste.5. Fill voids - matching paper with starch paste.6. Flaten between paper blotters. Brush size onto hard creases.7. Spray deacidify - methyl magnesium methoxide.8. Reassemble using original staples.
I believe the frame is darkened walnut.The glass is UV plexiglass.It is triple matted. The outer matt is silk.The width is approximately 20 1/4 to 20 1/2 inches.The height is approximately 39 to 40 inches.

---