The book "Swedes on the Delaware" (or "The Swedes in America") is a comprehensive history of this colony:

https://www.gutenberg.org/ebooks/77652.epub3.images

The interesting part of the book to me was that the Swedes and the native American Indians negotiated as equals for the land purchase, it wasn't by means of violence or deceit. In the end they depended on the purchase of food from the natives during a bad harvest.

Amazing that modern Delawareans have built a beautiful replica of the Kalmar Nyckel ship, considering how little impact the Swedish colony had on American history.

All in all, Swedish and Dutch colonists, although enemies, treated each other very much as gentlemen. Taking a fort meant showing up with the larger force and the other surrendering. Forts changed hands several times, which isn't mentioned in the BBC article.