This vintage paper railwayana item from 1939 is a must-have for collectors of transportation memorabilia. The code book contains essential information for sending telegrams during that time period. Its historical significance and unique contents make it a valuable addition to any collection. The item falls under the collectables category and specifically, transportation collectables and railwayana. With options for rulebooks, it is a one-of-a-kind piece that belongs to a bygone era. It is an opportunity to own a piece of history and to add a rare item to your collection.