1. Add MS 33231 U Reference (shelfmark): Add MS 33231 U Title: Scope & Content: U. "Plan of Riga and the River Duna with the Forts on the side of Curland, as it was in the year 1656." Riga, Livonia: Plan of defences in 1656;: 18th cent. Collection Area: Western Manuscripts Languages: English Date Range: 18th century Extent: 1 item