For the UK and Ireland channel, see: TLC (UK and Ireland).

Appalachian Community Service Network

1970–1985

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The Learning Channel

1985–1989

1989–1992

• See a promo for The Learning Channel from 1989

TLC

1992–2006

This logo was used in various forms from October 27, 1992 until 2006.

• See a TLC ID from 1996

2006–2009

A new look was launched in March 2006. This logo has a sans serif font and the boxes now have rounded corners.

• The Logo Factory

2009–present

Discovery Communications

U.S. domestic networks Discovery Channel | Animal Planet (HD) | TLC (HD) | The Hub | Science (HD) | Investigation Discovery | Military Channel | Destination America | Discovery Fit & Health | Velocity | Discovery en Español | Discovery Familia | Oprah Winfrey Network | 3net International brands Discovery Channel (International) | Animal Planet (International) | Discovery Science | Discovery Civilization | Discovery Travel & Living | Discovery World | Discovery History | Discovery Turbo | Discovery Real Time | Real Time | Discovery Home & Health | Discovery Historia | DMAX (UK/Ireland) | Discovery Kids Latin America | Discovery HD | Discovery HD Showcase | Investigation Discovery (Latin America) | Discovery Shed | Quest | Animal Planet HD | TLC (UK/Ireland)