Irenaeus would not count a 2nd century text as scripture.
There is reference made to the practice in both 17th and 19th century religious texts, although these do not describe how the practice was performed.
The text is based on a collection of 15th century texts about art.
It is known from 13th century texts that a festival every first Monday of May survived.
While the lyrics are said to date from the 19th century, no pre-20th century text is known.
The Continuation in its present form is a 13th century text.
The names are taken from a 1st century non-biblical text called 1 Enoch.
Only the name remains, saved in 17th century texts.
It is an important witness to the 13th century Byzantine text.
Over 6500 different tangram problems have been created from 19th century texts alone, and the current number is ever-growing.