One way to get look at current events or a glimpse of the past is to read what people read, to see what people saw. This evidence can take a myriad of forms: oral histories, films, audio, advertisements, books, photographs, newspapers, tweets (for history since 2006) and more. The sources to access for the 20th century are newspapers.
Newspapers are a primary source providing a first rough draft of events. Since most newspapers are local in scope, there is good coverage of local issues. Newspapers also provide a good feel for the time period.