Good source for help in working with older properties, although a bit too flip. Generally European sources are more informed than USA but this gives good references and sources which is what most private individuals need. It is less usefull for professionals such as architects & designers. Even here because architectural and design education in the states is more geared towards large scale developement and not so much to restoration / renovation this reference is usefull. Good for usa names and sources, but suggest that european references etc. are better in terms of specific details and construction.