In 1902 Friedrich Bienemann published a study called Die Katastrophe der Stadt Dorpat. It starts when the capture of Dorpat (Tartu) by the Russians in 1704 and ends (for all intents and purposes) in the late summer of 1709, when the Russian forces started to gather for the final attack on the last Swedish bastions in Livonia and Estonia. Bienemann was in 1902 involved in the cataloguing of the "Swedish archive" and as familiar with its content as anybody. A few days ago I randomly checked a few of the references to incoming correspondence given by Bienemann and it so turned out that they were impossible to find. I could find other letters, relevant to the matter but not used by Bienemann, but it seemed impossible to find the ones he had used - until I got to LVVA, fond 7349, op. 2, vol. 243-247, some of the post-Bienemann supplemental volumes. There the letters were, arranged almost like Bienemann had just left them. One example: On page 175 Bienemann refers to the following incoming letters:
Lt. Col. von Vettern to Dep. Gov. von Funcken, dated Pernau 4 September 1708.
Colonel Nieroth to Major von Heine, Abbia 1 September 1708
Colonel Nieroth to von Funcken, dated Pühastekülla 27 October and 9 November.
Col. Nieroth to von Funcken, dated Pallokülla 14 November.
These are all in volume 244. Vettern to von Funcken starts on page 89, Nieroth to von Heine follows on page 91 and the three Nieroth letters to von Funcken can be found on pages 79-87. Very neat.