Children's Television Workshop
Children's Television Workshop was founded on May 20, 1968.
CTW Family Workshop
This logo was used for a very short time in 1999.
On June 5, 2000, Children’s Television Workshop was renamed Sesame Workshop. This logo is still used on merchandise, and can still be seen on reruns of Sesame Street episodes that were used from 2000-2007.
In December 2007, the house was dropped, leaving only the 2000 wordmark. This logo is still used on merchandise, and can still be seen on reruns of Sesame Street episodes that were used from 2007-2018.
On July 23, 2018, the logo received a major update. The font has been changed, the words are now in all-caps and dark gray, and there are now two lines above and below. The top line is yellow with a curve in the middle, and the bottom line is green. The result appears to be an homage to the famous Sesame Street sign. This logo has a few variants, this stacked version being one of them.