How are survey data used in ongoing identification?
As the survey progresses, it is almost certain that historic contexts not recognized or fully defined at the time the survey was planned will become evident. Sometimes contexts that were initially defined very broadly are divided into multiple contexts as they are refined based on incoming survey data. For example, an initial context might be the development of warehousing as a major city industry and, as survey data developed, it might be found that in fact the city’s history had been characterized by two major phases of warehouse development-one associated with steamship commerce, the other, in another period of time, with railroads, and each represented by distinctive kinds of warehouses in different parts of town. Dividing the context into two would be appropriate to ensure that both kinds of warehouses and the historic and architectural significance of each were given due consideration. Within each context, the analysis and synthesis of incoming survey data will almost always lead
