See e.g., Rembrandt’s portraits of Marten Soolmans, son of a wealthy owner of a sugar refinery, and his wife Oopjen Coppit, whose second husband, Maarten Daey, was a captain of the West Indian Company engaged in the slave trade on the West coast of Africa, https://hdl.handle.net/10934/RM0001.COLLECT.616582 and https://hdl.handle.net/10934/RM0001.COLLECT.612987. Sint Nicolaas “Oopjen”; Mark Ponte, “Unknown slavery stories behind famous Rembrandt paintings,” vootnoot.org (blog), https://voetnoot.org/2021/02/15/unknown-slavery-stories-behind-famous-rembrandt-paintings/, last accessed 22 February 2021. See also this group portrait of textile sample officials at the Leiden Cloth Hall, https://www.lakenhal.nl/nl/collectie/s-12. Textiles, such as the famous Leidse laecken, became valuable means of payment for Dutch merchants in the trade of enslaved people in the seventeenth century; on payment with textiles, see Oostindie et al., Sporen van de Slavernij in Leiden and Den Heijer, “Een Afrikaan in Leids laken. De Nederlandse textielhandel in West-Afrika, 1600-1800,” 279.