Chapter 3: Maps, Notes, and Sketches in Archaeological Interpretation: Colonial Sites Coastal California archaeological and historical sites mapped by the US Coast Survey in the nineteenth century include a wide range of site types. To illustrate the collection, I discuss several examples grouped into nonexclusive categories. This chapter focuses on colonial sites, including much of the infrastructure the USCS was tasked with documenting. Chapter 4 addresses Native American sites, many of which were mapped because of their distinctive topography or as visual reference points for survey marker plotting.
Six categories of colonial sites or site complexes are outlined. Cities and towns include areas of concentrated residence. Landings are locations on the coast where wharves, docks, or other shipping facilities were constructed, or where ships anchored nearby and used beach landings for the transport of goods or people. Industrial sites include facilities such as lumber mills, canneries, lime kilns, smelters, mines, and tanneries. Shipwrecks are locations where the wreckage of vessels came to rest, at least temporarily. Fortifications include presidios and other military bases of varying scale. Finally, ranchos, adobes and other dwellings are residences associated with Spanish, Mexican, Californio, US, and Native American habitation, often involving livestock structures and pastures, orchards, vineyards, and crop rows. Whereas cities and towns were often mapped as a geographical unit with little or no description of most structures, ranchos and adobes were typically identified with a particular owner, family, or group. Dwellings of named individuals of historical significance are also included in this category. Cities and Towns
The USCS mapped and described numerous cities and towns on the coast and inland tidewater shores of California. In most cases there are other archival and published maps of these communities, but USCS records offer much to archaeologists investigating early town construction. Two of the most well-known published USCS maps for California are the city maps of San Francisco (T-sheets nos. 352 and 627, 1853 and 1857) and Santa Barbara (T-sheet no. 1229a, 1870; see also Harrison 1853). These cities were first mapped after they had grown substantially. In contrast, Oakland was mapped by the USCS in 1852 when it had a single wharf, two streets, and 18 buildings (Figure 21). Other examples of places that underwent rapid town development during the 1850s through 1870s, after the Coast Survey had completed initial maps of these areas, are Sausalito (Figure 16), Redwood City, Benicia, Pittsburgh, Vallejo, Eureka, Mendocino, Santa Cruz, Ventura, Santa Monica (Figure 18), Wilmington, and San Diego.