Some slaves were owned by merchants, farmers, and traders rather than the DWIC.
The first slaves came to Manhattan via the Caribbean. They had been captured from Spanish and Portuguese slave ships. It was not until 1654 that the first consignment of slaves coming directly from Africa arrived. After that only a few more attempts were made to organize a direct slave trade with Africa. In August 1664, a few days before the English takeover of Manhattan, the Gideon arrived with 290 slaves from Angola on board. In a single go this virtually doubled the number of slaves. The slaves' tasks included woodcutting, clearing land, burning lime and working the land. They also transported the stones needed to build the church and the fort. New Amsterdam, New York by Martine Gosselink
In the 1650's a slave cost between 140 and 375 guilders. Later the demand for slaves in New Netherland increased and prices rose. In 1664 a slave cost some 600 guilders. New Amsterdam, New York by Martine Gosselink p 209
'In 1639 about one hundred blacks worked in the colony, a number that grew to approximately 250 in 1664 and was doubled by the arrival of 291 slaves on the ship Gideon in August. In that year, blacks, both free and enslaved, made up between 6 and 8 percent of the population with a concentration in New Amsterdam where it may be been 10 to 17 percent.' The Colony of New Netherland, Jaap Jacobs p. 55.
In 1638, there were as many as 60 Africans in New Amsterdam, totaling a fifth of the population. One would reckon that in 1660 (our target year) there were probably slightly under 200, totaling perhaps almost 10% of the population. (I'm basing this on the figures given by Jaap that there were c. 500 in the colony in 1664, with 290 of those having arrived on the Gideon in August of that year, so c. 500 minus 290 = c. 200 for 1660, with the bulk of them in New Amsterdam). NAHC Scholarly Review Committee Notes.
New Amsterdam’s enslaved blacks were essentially the colony’s first municipal labor force. Those who were owned by the DWIC, as well as privately owned slaves, cleared forests and fields, constructed roads, and helped build fortifications like Fort Amsterdam and the Wall (later Wall Street) which spanned the island from the Hudson River to the East River. Typically, women worked as cooks, farm workers, mill laborers and performed household chores. Chris Moore, NYPL
The engraving above is from the collections of the New York Public Library. The engraver was Aldert Meijer, and there is another very similar image titled Engelse Quakers en tabak planters aende Barbados which was published later. This copper engraving is believed to be one of the oldest representations of New Amsterdam, ca. 1640. It is part of the Stokes Collection: Citation/reference : Stokes P.1642-43, B-10.
For more information on Slavery in New Netherland, please see Andrea Mosterman’s digital exhibit for the New Netherland Institute: https://www.newnetherlandinstitute.org/history-and-heritage/digital-exhibitions/slavery-exhibit/
New Amsterdam, New York by Martine Gosselink
The Colony of New Netherland, Jaap Jacobs