摘要：This essay presents an accumulation of data on the dates for common types of artifacts found on archaeological sites from the historical period. These dates come from a variety of sources and include a mix of types of dates. These dates are based on such things as patents, pattern registrations, dates when commercial production began, estimates of when production stopped, and the popularity ranges for various styles of wares based on makers' marks. The introductory essay discusses some of the problems in the sources of the dates presented.
