Tracks Across America was published earlier this year to commemorate the 100th anniversary of Caterpillar Inc. Written by a retired Caterpillar Inc. engineer and a retired Peoria journalist, the book focuses on the history of the company from Ben Holt's development of the crawler tractor to the introduction of the D11. The ten chapters in the book are each illustrated with original company magazine advertisements. For more information about the book, please see www.tracksacrossamerica.com. The book is available thru Amazon, Books A Million, and the publisher's bookstore, Dorrance Publishing.com