Van Loon, Hendrik Willem. "If the Dutch had Kept Nieuw Amsterdam"
Divergence: 1674 CE
What if: After recapturing Manhattan in 1673, the Dutch decided to keep it while negotiating the Treaty of Westminster.
Summary: Overview of the colony's history until its purchase by the United States in 1841, particularly its role as arms merchant to North America.
Published: In If It Had Happened Otherwise: Lapses Into Imaginary History, 1931 Viking, 1964 eds. (ed. J.C. Squire), q.v.