Wirta, K. and Hannula, H. 2022. Trade Must Go On. The Tar Trade, Nordic Rivalry, and Cross-Imperial Commercial Diplomacy, 1675–79. Legatio: The Journal for Renaissance and Early Modern Diplomatic Studies. 5, (Jan. 2022), 53–76. DOI:https://doi.org/10.12775/LEGATIO.2021.03.