Page "Thesmophoria" Paragraph 5

Not much else is known about the Thesmophoria, as only women were allowed to attend, and it was rare that women wrote down anything at this time, short of letters.

The " mysteries " or initiation rites ( teletai ) surrounding restrictive religious ceremonies were jealously guarded by those who performed them.

The chief source is a scholiast on Lucian ( Dialogue Meretricii 2. 1 ), explaining the term " Thesmophoria ".