Industry
People by century: organized lists and source notes
People by century: which date puts someone in a bucket, why historians avoid calendar centuries, and why every century looks busier than the one before.
Section
Industry
Industry
People by US city data: sources, fields and accuracy checks
People by US city data: what a geocoder actually returns, why failed matches pile into clusters, and why a postal code is a route rather than an area.
Industry
People by US city directory: what to know and why
People by US city directory: how the book was actually compiled, whose absence means nothing, and which sections researchers almost never open.
Industry
People by US state by year: an organized year-by-year guide
People by US state by year: six things that move an annual count, why both ends of the chart mislead, and how to tell a flow of records from a stock.