Volumes 1 through 20 of Alle de Brieven / Collected Letters, the complete series. Download for free.
Master list (pdf) of all 602 L-numbers, their Leeuwenhoek number, and their Collected Letters number
daughter Maria made a will describing herself as robust and healthy. Roelandus Van Edenburgh notary
ONA Delft inv. 2245, fol. 52