A source text is a text (sometimes oral) from which information or ideas are derived. In translation, a source text is the original text that is to be translated into another language.

In historiography, distinctions are commonly made between three kinds of source texts:

Primary sources are firsthand written evidence of history made at the time of the event by someone who was present. They have been described as those sources closest to the origin of the information or idea under study. These types of sources have been said to provide researchers with "direct, unmediated information about the object of study." Primary sources are sources which, usually, are recorded by someone who participated in, witnessed, or lived through the event. These are also usually authoritative and fundamental documents concerning the subject under consideration. This includes published original accounts, published original works, or published original research. They may contain original research or new information not previously published elsewhere. They have been distinguished from secondary sources, which often cite, comment on, or build upon primary sources. They serve as an original source of information or new ideas about the topic. Primary and secondary, however, are relative terms, and any given source may be classified as primary or secondary, depending on how it is used. Physical objects can be primary sources.

Katherine Anne "Katie" Couric (born January 7, 1957) is an American journalist and author. She serves as special correspondent for ABC News, contributing to ABC World News, Nightline, 20/20, Good Morning America, This Week and primetime news specials. Starting on September 6, 2012, she will host Katie, a syndicated daytime talk show produced by Disney-ABC Domestic Television. She has anchored the CBS Evening News, reported for 60 Minutes, and hosted Today and reported for Dateline NBC. She was the first solo female anchor of a weekday evening news program on one of the three traditional USA broadcast networks. Couric's first book, The Best Advice I Ever Got: Lessons from Extraordinary Lives was a New York Times best-seller.

As of May 2012, Couric also has a web show for ABC News, entitled Katie's Take, airing weekly on Yahoo.

Couric was born in Arlington, Virginia, the daughter of Elinor Tullie (née Hene), a homemaker and part-time writer, and John Martin Couric Jr., a public relations executive and news editor at The Atlanta Journal-Constitution and the United Press in Washington, D.C. Her mother was Jewish, but Couric was raised Presbyterian. Couric's maternal grandparents, Bert Hene and Clara L. Froshin, were the children of Jewish immigrants from Germany. In a report for Today, she traced her paternal ancestry back to a French orphan who immigrated to the U.S. in the nineteenth century and became a broker in the cotton business.

Sasha Grey (born Marina Ann Hantzis; March 14, 1988) is an American actress, model and musician, and former pornographic actress. Later in her adult film career, she was profiled by several popular culture magazines and television programs. She won several AVN Awards between 2007 and 2010, and has also been featured in music videos and advertising campaigns.

After her feature film debut as the lead in Steven Soderbergh's The Girlfriend Experience, she shifted her focus to acting, starring in the black comedy/horror film Smash Cut as April Carson, as well as having a supporting role in season 7 of HBO's Entourage. She has also appeared in independent films Quit, The Girl from the Naked Eye, Life, and Mark Pellington's I Melt With You. She is a member of aTelecine, an industrial music band.

Grey was born and raised in North Highlands, California, to a working class family. Her mother worked for the state of California and her father is a mechanic. Her ancestry includes Greek, Irish, English, and Polish. Her parents divorced when she was 5 and subsequently she was raised by her mother, who remarried in 2000. She's stated that while her parents hated her involvement in the adult industry, they get along.