This book consists of sheets of illustrations which professor Frederick N. Willson prepared in advance for the class of 1894 at Princeton University. Illustration number 12 feature an S with a strong resemblance to TUS. The S is not quite as angular as TUS but it still has the fundamental two rows of three vertical lines.

In the early 1970s, amateur photographer Howard Gribble was among the first to capture the emerging Chicano culture in Los Angeles and some of the graffiti he photographed appear to depict the number 8 in a style reminiscent of TUS.

The photographs in this photobook were taken by photographer Jon Naar in New York City over a two-week period in late 1973.

This is an expanded edition of reference #3 which includes previously unpublished photographs. TUS is featured in two of the photographs. The one on page 27 is titled Skin while the one on page 161 is titled Soul Food.

The streetwear company Stüssy interviewed photographer Jon Naar in 2010. One of the photographs displayed during the interview clearly depict TUS and was taken in 1973. It is the photograph titled Soul Food mentioned in reference #4.

Before Soul Food was featured in reference #5, it was also featured in this promotional video for The Birth of Graffiti.

When Jon Naar was interviewed by The Wooster Collective in 2010, Soul Food was featured once again.

In the movie Piranha, TUS can be seen scribbled onto the wall of a jail cell. The scene was filmed on March 23, 1978, at the Social and Public Art Resource Center in Los Angles.

TUS is featured in some of the artworks by Jean-Michel Basquiat.

TUS is horizontally inverted to represent the number 2 in this graffiti by a Los Angeles street gang known as the Rollin 20's Neighborhood Blood.

This is a drawer from a Danish prison with a squiggly version of TUS etched into the interior. Given that the prison closed down in 2006, TUS must have been etched into the drawer before then.

As seen in these images below, TUS is occasionally drawn as part of the English word Smile along with a palm tree in place of the letter L.

This book, from the early 20th century, contain various examples of common contemporary school scribblings. One of the doodles depict a stylized S but it is unfortunately not TUS.

The username of this archived Usenet account is Stussy S. It is the oldest mention of TUS I've been able to find online. It is also the earliest evidence of TUS being associated with Stussy.

This is the earliest online discussion of TUS that I've been able to find.

A demonstration of the method by which the symbol is most commonly drawn. Two rows of three vertical lines connected by eight diagonal lines.

TUS was featured in this promotional video for Stüssy.

A group of Australians hosted an art exhibition and produced a sensationalized video about TUS in 2013, attempting to repopularize the symbol on social media through the use of the hashtag #STUSS.

The walls of this art gallery was covered in TUS paintings back in 2013.

A font in the style of TUS.

YouTuber T1J (The1Janitor) talks about TUS in one of his videos.

In this episode of the animated TV series Steven Universe, the crops in a wheat field are flattened in the shape of TUS.

In this episode of the animated TV series Adventure Time, TUS is drawn on the ground by one of the characters.

TUS is featured in multiple episodes of the animated TV series OK K.O.! Let's Be Heroes.

YouTuber iDubbbz spray paints TUS on the walls of a sewer drain in one of his videos. Like many others, he refers to the symbol as a "stussy".

A short informational video about TUS by VICE.

A website and Instagram page dedicated to documenting TUS.

A Facebook group about TUS.

An Instagram page about TUS.

This American surf and skate shop have used stylized S logotypes since the 70s. The third t-shirt from the left in the fifth image from the top of the page features a logo that resembles TUS.

An American newspaper article from 1992 describes how the company 17th Street Surf Shop frequently sell t-shirts featuring an S-shaped logo. The S logotype came in a wide variety of designs and some were more popular than others. While multiple designs are described, TUS is not among them. This variety would suggest that, if TUS was featured, it was likely an article specific design as opposed to an official company logo.

The logo of this American trash metal band plainly features TUS. However TUS predates the formation of the band and it is doubtful the band has achieved enough fame to claim responsibility for its global recognition.

The S logotype of the Japanese motor company Suzuki is somewhat similar to TUS and was designed by a Japanese art student named Masamichi Tezeni in 1958.

Reddit user ourcadeink suggest TUS may have originated as puzzle.

Reddit user GaryDuder never recieved much attention for finding evidence of TUS back in 2013.

Some believe TUS does not have an origin but that it was simultaneously and independently "discovered" by people all over the world. This has been described as a Stand Alone Complex. A term derived from the subtitle of the popular manga and anime series Ghost in the Shell.

The concept of a Stand Alone Complex is somewhat similar to what psychoanalyst Carl Jung described as a collective unconscious.

It's not entirely clear when the first edition of this book was published. The oldest version listed on Google Books is from 1900 while the opening pages of the book I purchased from Amazon states the first edition was published in 1909. Furthermore, reference #47 claims it was first published in 1889.

According to this book, many popular matchstick puzzles can be traced back to reference #46.

I compiled a bunch of data to make this video. I've referenced most of it here.