Old calendars like this one from 1935 can be found in antique stores, eBay, and sometimes, even still hanging from walls in old houses. They can tell us a little about another era in its own words and images; and how dress, cultural norms and advertising have changed or stayed the same over the years.
For example, women in sexually suggestive poses are still used to sell products. However, I can’t imagine today cigarette companies having calendars printed for their customers. I don’t think very many people would hang them in their home or business.