2. This letter to
Koning is not known; Vincent reported in
letter 657 of 8 August 1888 that he had written to him the previous week. On 15 September 1888 Koning informed Theo: ‘I received a very nice letter from Vincent, by now some time ago. I haven’t answered it yet, it’s disgraceful, but I’ll write to him one of these days’ (FR b1080).