The exterior shows signs of aging, such as sun damage. I have read it once or twice and stored it. I haven't checked it thoroughly, but I believe there are no writings or folds inside. The December 1988 issue of Railway Pictorial features detailed information on monorails. - Title: Railway Pictorial December 1988 Issue No. 504 - Special Feature: Monorail - Publisher: Railway Book Publishing Association - ISSN: ISSN 0910-3687 Thank you for viewing.