In a letter to his friend Arendt van Buchell in Utrecht, Johannes de Witt mentions four 'amphitheatres,' two of which are situated outside and to the north of the City, in a street called 'Bishopsgate.' De Witt includes a drawing of the Swan to supplement his letter.
| Name | Event Role(s) | Document Role(s) |
|---|---|---|
| van Buchell, Arend | correspondent | |
| de Witt, Johannes | correspondent |