Many of the volumes in the archive of the Livonian Governor General contains items with little or no relation to its title. One such example is LVVA, fond 7349, op. 1, vol. 186, supposedly only about payment of contributions by citizens of Riga 1703-1706. However, it also includes a number of items delaing with an entirely different subject - the organization of the defence of the town in 1704-1705. First comes a list of where the various citizen companies were to be stationed in case of an attack. It's followed by lists which gives details about where the artillery personnel was stationed, how the guns were placed, where the infantry had its positions etc. Towards the end there are also a few items concerning Governor Frölich's attempted monetary reform (a matter I have previously covered briefly here.
In LVVA, fond 7349, op. 2 there are quite a few volumes which deal with Swedish-Russian relations (vol. 57-104). Some of them appear to have originated from the Swedish delegations themselves, i.e. drafts of outgoing letters, notes from negotiations with their Russian counterparts etc. In volume 77 one finds lists of Russians who had escaped across the border (1677-1678), in vol. 78 the itineraries for Bengt Horn's return journey from Moscow in 1662 and the journey to Moscow for the Swedish embassy of 1673-74.