If you mean the first guidebook, it depends on which one you have. They sold two different guidebooks in 1955. The first one has a blue cover and titled "The Story of Disneyland". In excellent condition, these sell for $75-100.00. More if you have the mailing envelope with it. The second one is "Disneyland in Natural Color", which was the first guidebook to have actual pictures from the park. It sells in the $125-175.00 range. Good luck!