English Guide Book in Wien/Vienna

You can purchase English guide books at the Freytag store on the Kohlmarkt.
I would suggest the Duncan JD Smith book, Only in Vienna, Nur in Wien, there are first and second updated versions in English.
This store also has other English guide books, i.e, Marco Polo, etc. but the Duncan Smith books are the most interesting and will give you information for Vienna sights off the beaten path.
Happy travels in lovely Wien.