The product is a lot of vintage Union Pacific Railroad calendars from the years 1970 to 1996, all stored flat and never rolled. These calendars are a unique collectible item for railroad enthusiasts and fans of transportation history. Made in the United States, they offer a glimpse into the operations and culture of the Union Pacific Railroad during that time period. Each calendar likely features vintage illustrations, photographs, or advertisements related to the railroad industry, making them a valuable addition to any collection of railroadiana and trains memorabilia.