I've been steadily working on Lodewijk Wesselo's letters. Currently I'm working on the letters he wrote during World War 2. In the beginning of the war he's still writing letters to his brother and sister-in-law in the Dutch East Indies, but later on the letters are to his brother in Voorschoten, Zuid-Holland, the Netherlands.
The most impressive letter is the one in which he details the bombardment of Rotterdam in 1940. It's like being there. Amazing.