The product is a set of two vintage 1950's Lionel Trains papers focusing on transformers and locomotives. These papers provide valuable information and insights into the technology and designs of Lionel trains from the 1950s, specifically in the United States. They are a collectible item for enthusiasts of railroad and trains, offering a glimpse into the history and evolution of transportation systems during that era.2 - Vintage 1950's Lionel Trains Papers - Transformers Locomotives. The papers are 4 pages in length. The papers are in very good condition for being nearly 75 years old, with very light wear - see photos. Lots of great info and ideas in these nice old papers